I'm rebuilding my kx85. What piston should I get? I like namura because it has the coated skirts, pre drilled holes, and their a great price. Now does namura make a flat top piston that has the holes and coating? ( I would like to bump the compression up) also are the "phat heads" any good from lukesracing.com I can get different domes for the head and it's suppose to up the compression and cool a lot better. Is that a load of crap or? Also what like modifications to the power valve can I do to the bike to give it more power, it already has a fmf exhausts and I'm getting reeds soon, I want more power but I want to be able to still run 91-93 octane fuel (which ever is the highest for where I get fuel from) please help!! Thanks you guys!