There is a 2nd slot in the roller that the shade will fit into. Check out VistaShade from ShadePRO:
http://www.shadepro.net/product/Shade_Drops/rv_awning_electric_awning_shade_drop.html
We purchased the 15ft wide one with an 8 foot drop last March from ShadePRO. We use it all the time and love it. Price was good, shipping included, support was good, and it arrived sooner than estimated. It is really good quality (thick material) and a lot cheaper than the one from "Carefree" It's easy to install and use.
Ours has a 2 foot screen panel that installs in the roller tube and stays there permanently. The 6 foot panel zips on and of very easy.
Notes on installation. Regardless of which shade accessory you buy, the Carefree awning (installed on our Solitude) has a few issues that makes installation a little tricky and was confusing until we found out that the awning is tapered.
1) Carefree did not make a slot on the electric awning head at the end of the awning tube. You have to bend the nylon cord with the screen insert around the head to insert it into the awning roller slot. Just feed it slowly and it will work. The good thing is that once it's installed, you never have to do it again because the top screen insert rolls up with your awning when you travel
2) Make sure to position the screen insert so that the front awning edge covers the shade insert to prevent the wind from catching it when in transit
3) The Carefree awning width tapers down by about 6 inches at the awning roller tube. The Carefree awning width is 15ft on my Solitude where it connects to the trailer wall at the top and then tapers down to approximately 14'-6" at the roller tube. Make sure to align the shade insert with the leading edge of the awning material at the top of your trailer otherwise it will catch the wind when you travel dow the road and it will probably damage it
