p90x power bars
p90x chin up bar driving me NUTS?
You have to put a screw through 2 holes, then twist a nut on the screw. (from the other side) This is bascially impossibe because you cant twist the nut without the screw moving w/ it. I am about to go insane. I have even tried high powered drills without sucess, the screw moving at high speeds!
Could this help?
http://handyowner.com/how-to-install-a-pull-up-bar-in-your-home-gym/
P90x Week 2 – Quick Update #2