alright i have a 760 with mild porting, b-pipe, msd enhancer duel 44s running about 185 psi. the ski is running out of fuel on the top end. I have tried multiple main jets starting with the stock 137s to a 140 -145-150 it doesn't seem to be helping at all. Low end is good mid range seems good just not getting enough fuel on the top i changed to a 2.0 needle and seat it think its a fuel delivery problem. I have been through the carbs 3 times cant find any thing wrong all the fuel lines are good what next?