That "nasty buildup" is where I beat it on the trailer closing the gap is all. So I thought from what I read 50%of the plating should be burned off? (the 3 and 9 deal) It's got killer throttle response. Everyone who climbs off the seat... That's the first thing they say. I just don't know much bout alky and don't wanna burn the house down! when I made 2 passes I saw some heat build at base of ground strap and Dutch35o to rich it up a lil, then made 2 or 3 more passes. As info... Timing is on 7 it's a 4 mil stock cylinder drag ported. I could use all the info I can get! Thanks