I'm about to put the head back on my d15b7 and I have a few questions. First, are there only 2 head "dowels" between the head and the block? Second, If there are only two, which holes do they go in? Third, During disassembly, the guy at the machine shop that did the head rebuild, pulled my old ones out and it lookes like he used vice-grips. One side is nice and smooth and the other looks like hell. (scratched, dented, and out of round) I would assume that I need new ones or is the fit of the sleeves not critical? Sorry, no pics available.