Few weeks ago we pulled the cover and honed the cylinder and planned on putting the new piston in....my husband had trouble getting the piston in and tapped it in with a hammer.....its now stuck flush with the cylinder opening...compressed air wont push it back out either. The old one came out no problem so whats the deal are the newer pistons bigger? Id prefer to get the new piston back out somehow rather than throw the whole thing. I believe he was going to tack weld a piece of metal on te end of it maybe the piston I don"t know I didn"t ask and try pump it full of grease to try push it out. any simpler solution?