Ok I wont run it on that then, I just took the backplate off, its a pretty good condition just some old oil on it, the inner bear looks to be seized, its not moving at all, and the front section (I don't know the real name) is not moving either, I tried using some vice grips on it and holding it in a vice without much pressure but I don't want to warp anything, also the piston sleeve is not coming out, I tried a zip-tie through the exhaust port and moving the piston up and all that did was cut the zip-tie in half, have any pro ideas?