Hello Matt,
You were kind enough to reply to my question to you (thank you), so here you go....
Rear wheel adjuster bolts; You will want to purchase machine-threaded 5/16" "Eye" bolts. They are available everywhere (e.g., Lowes, Home Depot, etc.) HOWEVER... nearly everywhere I went (Including those stores) the circular "eye" was either (way to) big or (way to) small for the 5/8" axle bolt it will be used on.:doah: To work effective it has to fit very close. I eventually found them at "Ace" hardware stores, however, there is another catch....
Only the ones that come on the turnbuckles will work,:doah: and even with those you have to very slightly drill/ream them out to 5/8":grind:
Axle bolts: You need 5/8" X 8" (for both front and rear) if you are using the low-profile nylock nut. (which we did)If you prefer to use the full size nut you will need 5/8" X 8 1/2"
Hope that this helps