Hootie

Single plane shear strength on a 5/8" grade 5 bolt is around 22,088 pounds. Multiply that times 10 bolts in the pin box that's 220'880 pounds. I don't think the bolts would be the first thing to go.

http://nucor-fastener.com/Files/PDFs...r_Strength.pdf

I did loosen all the bolts and found that I could move the end of the pin box up and down almost two inches. Who knows what position the pin box was in when the bolts were torqued? I lifted the pin box up and torqued everything to 110 foot pounds and will keep a close eye on it.