Looking for input on running a 455 carb on my 350 engine. The carb was professionally restored to original. WOT is great once I'm rolling, terrible out of the hole. I'm thinking things need changed to run this carb on the 350 engine. Idle mix screws are all the way out and don't seem to do much. Vacuum runs around 12-13 Hg at 950 rpm idle, (higher than it should need to be). My idle needs to be adjusted so high to keep the car from stalling once placed into gear that I think the throttle blades are cracked open some and that they are pulling fuel from the main metering at idle. Can anyone tell me what i should be changing related to the idle channel restrictors or tubes. Are there other things I should look to changing to run this 455 carb on a well built 10:1/ .030 over with TA 284 -88H cam, TA Dual Plane intake, with ported heads, Tri-Shield 2800 rpm stall and stock manifolds with a 3.73 rear gear.