Horny ... you have more serious-issues than soot or a valve tooo tight. The last split/blown-up VP I saw had a hole in a piston the size of a nickel
it doesnt run bad at all, no missfires no popping or anything weird, it runs awesome, the last time out it cracked the pan and i stuffed a bunch of rags under the intake to soak it up while i finished running that night, it still ran 11.60's just had to change the rags every round... leak down test it is...
