okay i took the cooling head off ( wow them screws where so tight, i put loctight on them when i put the cooling head back on, is that right??) and i couldn't see the side of the piston but i could see the side of the sleeve when i had the piston at the bottom and i didn't see any grooves or such dug in the side of it?? so i guessing that is a good sign??? what had the screws so tight? was it loctight on them or just from all the heat???

and one more question. when i have the glow plug in, i feel a pinch when the piston goes up and then a easy spot and then a pinch as the piston goes back down, when the glow plug is out, i don't feel any kind of pinch till the piston goes back down ( which of course its a very slight pinch) but everything i read says i'm suppose to feel the pinch at the very top, so why is my pinch when its started going back down about an 1/8" ? which this is how its always been since i have learned to turn the flywheel LOL. its not something that has just started