Took the gun out for probably it's 5th trip to the range and noticed that the slide was hesitating, and even stopping when the round hit the feed ramp. But this only happened when I was chambering the first round. Once I started firing it fed ok, if I limp-wristed a round it would misfeed/hesitate every time, but if I was shooting solid it fed ok. I have not done the polish routine, it looked like it had been done from the factory. Is that all I'm looking at doing here?