i patched up the bleed holes in the pump shot passage that prosystems had modded. now i have pump shot as soon as the throttle is moved. will see if this helps with the stumble. also pulled a couple plugs and found they were almost black, so while i was in there i dropped the pri. and sec. jetting two sizes. was 84/92 and now 82/90.
when i had it on the dyno the air/fuel was 12.8 avg in 65* weather. should run alittle cleaner. i'll know more tomorrow when the roads dry up.