so i got this 350, its got a demon 750 with vacume secondaries on it among other add ons, it runs fine but when i stomp the gas it bogs out but after a few seconds and you pick up speed it just opens up and runs like a bat outta hell, i adjusted the idle mixture and idle speed already i have tried all the vacume springs same thing everytime is there something else i should be adjusting???? its a older demon and in a couple weeks im gonna go buy a new carb but i dont want to if i dont have to any ideas?