Thanks. I have read that website many times and I have also done the turning of that rod both in and out. I was trying to get the tension on the arm increased and also to take care of the knock sound. After doing some real research this afternoon, I found that the two pieces that we contacting each other were the two that I mentioned above. Tomorrow, I'm going to remove some metal and give them the clearance they need. I did also find that the sealed bearing is not tight within the end of the drive rod. It moves in and out. I pushed it back in all the way and within a few seconds of running, it had walked it's way back out almost to the point of failure. Like I said, I'm going to try to tighten it up with a paper shim and press it back in to see if that fixes it. I did find the ereplacementparts part mentioned for the $30+ dollars. It is actually cheaper from DeWalt but by the time I add the shipping cost on, the two places are about the same. I guess I'll have to order a new one if my "fix" doesn't work out. I think it comes with new bearings on both ends so that's a plus. Little by little, I'm finding all the problems that need fixing. I sure hope I end up with a good usable saw when it is all done. I'm also going to bid on a used Hegner on eBay that may become my "second" saw.
Ray