hello all. I have a problem im trying to figure out. first heres the background. 96 90hp johnson V4, on a same yr hydro sport. bought it from a man who let it sit for 5 yrs in his garage, i know bad right. so i begane with rebuilding the vro and closing off the oil side. new vapor chamber gasket. cleaned the carbs. it idles at 1000 rpm. now when i rev up in wot to about 3500 or so a few times it starts to lull and idleling sounds funny and low. sounds like its sucking air somewhere to me, so replaced all the pring clamps on the intake fuel side with ratchet clamps. not as bad but stills does the same thing. after i shut it off i prime the bulb up again and it acts normal again. is there something im missing that would cause this? im kinda running out of ideas here. no gas is leaking anywhere so has to be a air leak for it to run lean like that? thanks to all replys