Need some info. Twin 750's vacuum secondarys, in line on a 468/ 671 /15 over/ 10 -12 lbs. boost @ 6500. Boat runs great, starts good, idles great, no hesitation upon acceleration, just explodes and runs great, plug color nice and dark tan. Now the problem. When I idle through a long no wake zone, seems like the blower 'dry's out' and when I punch it hard I get a big lean pop. Also big lean pop when I make a pass then slow down, go to turn around and punch it. My fix was to go to 2" spacer plates and put 50 cc accelerator pumps on the primarys. I would like to keep the vacuum secondary carbs, where I run it I need to go 35 miles without xtra fuel. Rt now it is fairly fuel efficient when cruising. ................ What do you guys think of the 50 cc pump idea??????