I have no doubt that a number of misfires have been caused by home tinkering or lack of cleaning. However, there are tons of people out there that say they never made any attempts to adjust them and they went off. You sure have a couple shooters and if they were mine they would be changed now, but that's your choice and I can understand your reluctance to do so the way they shoot. It's obvious to me that everything else on them is what's making them shoot like they do and any good aftermarket trigger shouldn't change that one bit. Have a good one!!!