barrel chair bolts
on my previous coach I replaced the floor and took out the chair. the passenger chair and driver chairs nuts were attached, but when unscrewing the barrel chairs bolts, i could hear the nuts drop. Several nuts dropped and I was able to remove the barrel chair. Problem was replacing the nuts, my arms were to short to reach and my socket extenders were to short. I made a long extender out of steel rod by grinding to a square head to fit the socket and used a pipe wrench to tighten. Good luck.