I am new but have been around enough to see the same aggravating questions over and over. I searched for my answer beforehand but didn't find it, so here goes. Sorry for the question really, the old timers here may, and probably already have answered this a hundred times. Nature of forums I guess. I bought my HC last month. It is JHPxx. I have no idea what the heck that means, I have read TX explaination of the serial numbers, I have studied his charts. SLOWLY. He is smarter than me! It's greek. So I don't know when it was born. That is my first question. Second, Is this gun liable to have the preening issues? Do I need washers? From what I have read its a distortion, hole, or widening around the guide rod. How can you tell if it's developing? anybody got a picture of the problem??? A picture is worth a thousand words. Mine has a lot of metal around the rod. Don't they all? How can a plastic rod cause the metal to erode if that's what happens. Somebody please lecture me on Preening and maybe a picture please. I searched the forum and couldn't find a lot of facts.