Just took apart a super dirty 327PC gun that I just got in trade. When I went to remove the trigger, the hand kind of bound up and the spring popped out. Of course, when I went to put it back in, it went into outer space and is gone for good. Are hand springs frame specific, or is it one size fits all, except for the J frame? Also, I noticed that the back of my trigger didn't have a groove for the spring to set in, is this normal with the newer guns? TIA.