The spring is nearing its end. It just doesn't have the pop it used to have. I haven't seen a malfunction yet but it's coming. Occasionally when I seat a magazine and the slide runs itself(happens with a lot of polymer guns) the round will not quite chamber. It used to always chamber a round if the slide ran but I do not consider this a malfunction since I rack the slide anyway. the spring does not have the same force it use too.
I use ballistol and gun-slick pre lubber whips. I do not clean after every trip. After a class or 300+ rounds yes.
It started as a range kit gun and I have 3 mags which also still run great. I probably just need a new guide rod spring and she'll be just fine.