Another thing I should mention is the heads have not been decked so far (far as I know of anyway)...stock is 61cc but they were enlarged....basically ported out to a 65cc because of damage in the one chamber. So instead of decking it from making a 61cc to a 58cc now it has to go from the enlarged 65cc down to a 58cc.....could that be too much decking? I forget the general rule of thumb for how much cc you lose per thousandth's of decking. I really would love to have 9:1 CR if possible.