I have the motor apart on my bench, have the head and camshaft off. Looking at the piston and it seems like there is a large gap between the piston and the cylinder, I can stick my fingernail in between the two, when the other side of the piston is flush with the cylinder wall, is that normal? I will be measuring it later. I bought a new piston and rings for it since it was burning oil, but the valves have also not been touched for a year, if the valves were off could it burn oil? About half a quart a week, as well as smoking on startup. Should there be oil around the valves and camshaft? Or are my seals out? This is my first time taking apart this motor.