No, for some strange reason it didn't allow the whole post.

Here it goes again:

I have been running a WS7 for the last year and a half, aprox 5-6 gallons. I decided to pull the motor apart for a little PM, and noticed a proportionaly large amount of carbon build-up just on the top of the piston. After some carefull cleaning I also noticed two very small nicks in the top of piston maybe from a coil on the plug. I was wondering what caused the build-up ie. tune, fuel, wrong plugs, and if the nicks in the piston itself would hurt performance or tune. I have been running OD 77t and 97t plugs. The rest of the motor is basically spotless and it ran fine prior to tear down.

Thank you for the quick response to that partial post!!!