Have you tried shooting a few hundreds through it with no cleaning?
400-500 rounds with no cleaning other than running a bore snake through the bbl once or twice. I always run the snake through at the end of a range session anyway, but I've gone 2 or 3 range sessions between cleanings. The PX4 (full size, at least) can ride dirty. I don't recall any jams with mine, but if I did have any, they were ammo related. I've run some pretty nasty ammo through it. Other than excessive smoke, never an issue. My PX4 is a keeper.