Honestly i doubt you are folding them too often. If you dont win a huge hand once or twice while 2 players are all in its ok, More often than not you are not trying to put yourself ina race situation in a SNG, and thats exactly what a small PP is going to get you into. You are going to be racing so i strongly suggest that you only call with a small to mid range PP if you have a strong read on players sharing cards (ie AK, AQ or AJ AK or so on). This is hard to get a read on players like that on SNGs and i have recently stopped playing small PPs so much on large MTTs which has greatly helped my game. Racing isnt always the way you want to play, there are plenty of ways to gain chips in a tournament, stealing and playing weaker players in isolation and so forth. So the only time you are going to want to play the small PPs to all ins is when youa re short stacked and you are honestly looking for a race. This is what weaker players and more new players will do , they look for races because its an easier way for them to win rather than strategically look at the hand becasue they will more than likely get outplayed. So just because you have thrown away some small to mid PPs in some SNGs that may have won, Id say stick to that strategy it should help you in the long run. Unless you have a dead read that the 2 players are all in and sharing cards or another short stack might be pushing with a small PP stay away from calling with these small to mid PPs. Good luck.