WHY?

I think i got it straightened out and didnt have to pull the intake back off afterall... I found 2 things that i didnt like and fixed both so not sure which one fixed it. I told you about spraying carb cleaner along the rail and it revved up right? Well i got to thinking that maybe the gasket between the carb and intake was possibly leaking and sucking that carb cleaner in and not the intake..so i pulled the carb off and that thick gasket was pretty rough..been used a long time, so i found a thin gasket to put between this thick gasket and the intake because that side of the thick gasket was in bad shape. Next, i checked the torque on the intake and it was only at 20 ft. pds..so i tightened it up to 40..Fired it up and she idled on her own!! I ran it for over an hour and drove around and all seems fine thankfully! I do appreciate everyones help with this, thats for sure!!! Now my next problem is finding another thermoquad base plate..the throttle shaft bore on the primary side on mine is worn and it whistles to beat hell when idling and is very aggrevating! Also, i cant get the primaries to close all the way against the idle screw because of this so its wanting to idle at 1000 rpm's..I can pull it back with my hand but it wants to go back up on its own..I think with the throttle shaft bore worn that its binding the primary plates just enough to do this.. This is a big primary thermoquad, wondering if i can use the base plate off any thermoquad as long as it has the big primaries? I know the top plates and center sections vary, but not sure about the bottom plates..This one is a 9077S