Lube heavy and keep shooting.
Mine did the same thing and smoothed out way before 500 rounds. I cant remember if it was any specific brand that didn't go back into battery. I just lube it heavily and shoot it. I carry it every day in a Desantis Super Fly holster. I do have to strip and clean every couple weeks to get pocket lint, etc. off of it and re-lube.
GREAT gun by the way