This a follow up to the thread "Weep Holes", thanks to jjbbrewer we found out there is a Lippert Technical Instruction TI-421 to perform a simple modification to the Weather Proof Ramp Doors to allow water to escape.
https://www.mygrandrv.com/forum/showthread.php/50527-Ramp-door-weep-holes
If you have one of these, it applies to you:

These "Weatherproof" Ramp Doors supposedly have no wood or other materials inside that can be damaged by water but if LCI though it was important enough to make a TI about it, I suspect it could cause issues down the road.
Lippert TI's for the ramp doors are located here:
https://support.lci1.com/ramp-doors
TI-421 is here:
https://support.lci1.com/documents/ti-421
https://lci-support-doc.s3.amazonaws.com/technical-information-sheets/doors/ccd-0006231.pdf
---
In the Technical Instruction it explains to order a pair of grommets (to dress the holes and make them look nice), those grommet's are:
SNAP BUSHING - .25 X .57 X .41 - BLACK (2058)
SKU: 2021132888
Price: $2.95 USD
Qty: 2
https://store.lci1.com/snap-bushing-25-x-57-x-41-black-2058-2021132888
Order 4 or more of them since they are so cheap (and shipping is not), that way you have spares if one falls out and can help out other campers with the same doors.
---
These grommets are 1/2 inch and stamped:
Heyco
SB-500-4
(Black)
https://www.heyco.com/Hole_Plugs/product.cfm?product=Snap-Bushings-1


---
The TI asks for a 1/2" hole drilled in two spots, that is a very large hole in an aluminum frame that you are only supposed to penetrate on side so definitely take your time.
---
Here was the procedure I used after reading the Technical Instruction:
1. Mark the area with painters tape
2. Measure for the center of the hole (try to get it PERFECT as this hole will be right against the bottom of the door frame inside).
3. Center punch the hole to ensure the drill bit will not walk
4. Start with 1/8 drill bit and drill with your fingers/hand/whatever braced against the surface. You only want to go through the first outer wall, not all the way through! Go slow and apply just a little pressure off and on to ensure you don't go crazy. It's a very deep door inside (more than one inch so it's pretty hard to go through the second side but still doesn't hurt to be careful). You will likely get quite a stream of water coming out. Let it finish before moving on.
5. Move to 1/4 drill bit, yet more water
6. Move to 3/8 drill bit, again more water
7. Finally finish with the 1/2 inch drill bit and then let hole weep until done.
(If you just start with a 1/2 inch bit you will almost guarantee to wobble and end up with an oblong hole unless you do this often).
8. Vacuum and deburr the hole so the grommet will sit flush.
9. Insert the grommet
10. Ensure the grommet will stay or once the hole is dry, use black silicone to hold it in there (if you made the hole too large).
Note: A step bit will make a MUCH cleaner hole once you move past the 1/4 inch pilot hole Just watch you do not oversize!
Optional: If your trailer is perfectly level just raise the tongue and use the stabilizers/jacks to put a bit of a lean to one side, then all the water should move down to one of the holes and come out.
(Due to the 5 picture limit, I'll post the rest below).
https://www.mygrandrv.com/forum/showthread.php/50527-Ramp-door-weep-holes
If you have one of these, it applies to you:

These "Weatherproof" Ramp Doors supposedly have no wood or other materials inside that can be damaged by water but if LCI though it was important enough to make a TI about it, I suspect it could cause issues down the road.
Lippert TI's for the ramp doors are located here:
https://support.lci1.com/ramp-doors
TI-421 is here:
https://support.lci1.com/documents/ti-421
https://lci-support-doc.s3.amazonaws.com/technical-information-sheets/doors/ccd-0006231.pdf
---
In the Technical Instruction it explains to order a pair of grommets (to dress the holes and make them look nice), those grommet's are:
SNAP BUSHING - .25 X .57 X .41 - BLACK (2058)
SKU: 2021132888
Price: $2.95 USD
Qty: 2
https://store.lci1.com/snap-bushing-25-x-57-x-41-black-2058-2021132888
Order 4 or more of them since they are so cheap (and shipping is not), that way you have spares if one falls out and can help out other campers with the same doors.
---
These grommets are 1/2 inch and stamped:
Heyco
SB-500-4
(Black)
https://www.heyco.com/Hole_Plugs/product.cfm?product=Snap-Bushings-1


---
The TI asks for a 1/2" hole drilled in two spots, that is a very large hole in an aluminum frame that you are only supposed to penetrate on side so definitely take your time.
---
Here was the procedure I used after reading the Technical Instruction:
1. Mark the area with painters tape
2. Measure for the center of the hole (try to get it PERFECT as this hole will be right against the bottom of the door frame inside).
3. Center punch the hole to ensure the drill bit will not walk
4. Start with 1/8 drill bit and drill with your fingers/hand/whatever braced against the surface. You only want to go through the first outer wall, not all the way through! Go slow and apply just a little pressure off and on to ensure you don't go crazy. It's a very deep door inside (more than one inch so it's pretty hard to go through the second side but still doesn't hurt to be careful). You will likely get quite a stream of water coming out. Let it finish before moving on.
5. Move to 1/4 drill bit, yet more water
6. Move to 3/8 drill bit, again more water
7. Finally finish with the 1/2 inch drill bit and then let hole weep until done.
(If you just start with a 1/2 inch bit you will almost guarantee to wobble and end up with an oblong hole unless you do this often).
8. Vacuum and deburr the hole so the grommet will sit flush.
9. Insert the grommet
10. Ensure the grommet will stay or once the hole is dry, use black silicone to hold it in there (if you made the hole too large).
Note: A step bit will make a MUCH cleaner hole once you move past the 1/4 inch pilot hole Just watch you do not oversize!
Optional: If your trailer is perfectly level just raise the tongue and use the stabilizers/jacks to put a bit of a lean to one side, then all the water should move down to one of the holes and come out.
(Due to the 5 picture limit, I'll post the rest below).