Thanx Tom. That info is appreciated. I would never attempt an overhaul without someone to at least help me. And even then, I would more prefer to just help and learn. I have plenty mechanical knowledge but prefer to learn the easy way.
The mechanic I have used is a guy who has worked on them his whole life. He works as a mechanic at a stone quarry (s) and also has a shop on the side. If he would let me hang out and help I'd be more than happy to. Then maybe in the future I would attempt a little work on it myself.
Either way, I need to schedule a "check up" using all the info you guys have offered. I appreciate it!!!