Ok, got the engine off the plane and worked on it a little. Took the head, carb, and backplate off. The backplate was pretty tough but finally came off. Inside the back of the engine there is some rust [:'(] But this is just on the back of the shaft thing. Seems the last person to run the engine left fuel in it too long. I got my afterrun oil and oiled up all I could, the piston, shaft, and back side. It seems to be better now but still has a spot that sticks. If I start to spin it around and around it seems to do fine but will get stuck every 15 revolutions or so. I don't think it is the head because when it is at the top of the stroke, I can very slightly twist the shaft to where it is changing position from pushing to pulling the piston and it feels like it is getting stuck. I am letting the after run oil sit tonight and will hopefully make everything a little happier. I don't want to have to take the shaft out and check the bearings if I can help it. Thanks for your guys help. I will try heating the head tomorrow. Maybe that is a little tight? I can certainly tell the engine has not had any run since the top of the piston is clean and shiny