Thanks for the info. After I got the cowl off the engine looked quite clean. I borke it down and the all the bolts were extreamly hard to remove. There was a good build up of chalky black crud on the piston top and the exhaust valve. The piston ring feels sharp on the edges and the liner is smooth and scratch free. I could not get the bearings out even after putting it in the oven for 10 minutes. I put all the parts into the antifreeze pot and will see if baking the bearings a bit will allow them to come out. The other thing I could not get out was the cam shaft/gear. it is being held in by the opposite bearing. I got both lifters out and the crank out but the gear is still stuck in there. It wiggles around and turns but will not pull out with needle nose pliers. I do not want to damage it so next I will try and sqeeze harder with the needlenose with some black electrical tape on it.