Thanks for the info. I am seriously suspecting something is wrong. I'll need to start checking numbers on thing. I wasn't able to find a part number on the piston, only 040 which I assume means .040 overbore. Number mic out that way.
This would definitely explain the detonation issue I have been trying to get rid of.
I don't have a close up of a bore but if you look at #5, you can see the deposits at the top of the bore.
