OK guys, I'm a bit perplexed and looking for help regarding the trigger on my Gen 3 G20. I admittedly have never given serious thought about Glock trigger mechanics, so not sure where to start looking. Here is what is going on lately: when the gun is cold and clean, the trigger is actually pretty nice for a Glock. That is the normal state. Lately, however, I have noticed that as the gun heats up and gets dirtier the trigger pull gets harder and harder. It is like it doesn't want to break. It gets to the point where I can barely make the trigger break. I thought my old Ruger P89 double action trigger pull was tough. I haven't swapped any trigger parts except for the trigger housing about 1500 rounds ago (the ejector was a little bent). The problem showed up subsequent to that. I suspect that might be a coincidence because the problems have only shown up in the last 6-700 rounds I would guess. I have detail cleaned it a couple of times since the problem started. That works, until the gun warms and/or gets dirty (maybe 30 rounds in a fairly short period of time). The trigger pull gets harder and harder and harder. Let it cool a bit, and it gets better. After 200 rounds, forget it. Even when cool it is still not right if it is dirty. I have thought about just replacing everything (I am not interested in looking at aftermarket parts at this point). My gun is well past its "break-in" period. Probably low 5 figures in total round count. When I field and detail stripped it, nothing looks out of place, worn, bent, broken, etc. Any thoughts? This is perplexing. I have gone 5-800 rounds between cleanings in the past without trouble. Thanks guys.