OK, here is a newbie motor question... I used some crappy fuel and was running a bit rich. My piston and standard head now have a black carbon, burnt oil like deposit on them. Should I bother to clean the top of the piston off with something or leave it like it is? I just installed a new turbo head tonight, which is when I noticed the black build up. I just switched to Byrons Gen 2 tonight as well, which seems to run amazing. I read somewhere that the motor should run clean with this fuel if it is adjusted right. Any help?

By the way, the GoTech 7p with the turbo and 053 pipe is really screaming now.