Well It took a while, but Im happy I did budget in a couple new springs for the 552 project. The bolt return spring was a surprise! The new spring was 1.5-2" shorter than the old spring!? Ok That was strange but makes sense, the fellow that had this .22 refinished it and then tried to make it work. He must have streched the bolt return spring thinking it had weakened when the nose was busted off the disconnector and causing troubles. And if that old camp gun ever sat for any great length of time sitting with a few rounds in the magazine tube that magazine spring might have taken a set over all those years and not push the rounds into the lifter like it should, causing my empty chamber problem. That and a over powered bolt spring might mess with a cartridge Not feeding.