I just bought a 1940s Koken Barbers chair and I was trying to get the trim ring off that's at the top of the base where the cylinder meets the base so I can get it re-plated. So I pumped it all the way up, I took the pump out of the base and tried to pull the cylinder from the sleeve because it looks like the cylinder needs to come apart to get that ring off because it won't slide over either end, the top cylinder of the pump would not pull out of the bottom and it got stuck at the top, fully extended, and now I cannot get it to go back down. It won't turn, go up or down. I am thinking that maybe by extending the pump all the way up I might have gotten the brake stuck somehow. I made sure the handle was all the way forward as to release the piston and allow the oil back into the top of the pump when I was trying to get it back down also. Does anyone have any experience with this? Thank you.