Does anyone else have this problem with their PC 9? I'll shoot a ,say, three shot goup with it and every time I''l have two shots close together with a third about four inches below the others. If I shoot a five shot group I'll get one, maybe two shots four inches away from the main group. Ten shots or more will have practically two groups, the main group where it should be with three or more shots about four inches low. This happens with every load I've tried, factory and handloads, with ghost-ring sights or scope,and no matter who shoots it. The gun would be pretty accurate if it wasn't for this. Any idea as to what is going on? I paid a lot of money for the thing but if I can't fix this problem I'll be forced to sell it at a considerable loss.