A while ago I replaced all the CCC stuff on my bone stock 305 with the regular mechanical carb & distributor. About 6 months later I swapped out the random Craigslist QJet I had for a brand new A-Team rebuilt M4ME. Ever since then I have had trouble getting the car to idle low enough when it is hot. Let me say that I have spent a lot of time getting to know these carbs and I already checked the fast idle screw, the normal idle screw on the driver's side (this carb doesn't have a high idle solenoid), and have made sure the choke is clocked correctly. I also adjusted the mixture screws to the spot where the engine feels the smoothest, and to where the O2 sensor gives the best reading with a volt meter. I have initial timing set 7 BTC with a timing light which from what I've heard should be only 1 sooner than stock for this motor. The problem is that the motor still idles hot at about 780 in gear and 980 in park, which is causing a fair bit of dieseling and wasting gas. I've had to switch the distributor to ported vacuum because using the advance at idle makes it run at about 950 in gear and 1000+ in park. I have replaced all of the vacuum lines and intake manifold gaskets on this car and done the carb cleaner / propane torch vacuum leak tests and come up dry. Also tested the vac. advance canister and blew out the idle air passages with carb cleaner and compressed air. The entire fuel system from tank to hoses is new within the last 2 years and done by me. At this point I am stumped as to what could be going wrong here. Other than this issue the car runs great, no stalling/shuddering/backfiring/hard starting/bogging/etc. When it's all warmed up it runs at about 170-190.