Well after realizing my AMM / O2 test light wasn't working due to bad O2 sensor, I replace it. Now adjusting the screw on the AMM to flash, my idle mixture is still rich. If I set the adjustment while running the engine at 2500 rpm and set the AMM screw to where the test light flashes the idle mixture is cleaner and the car runs great. I'm also watching the millivolts from the O2 sensor while doing the run test and all seems to be fine while adjusting the mixture. The BIG question is ? Does setting the AMM mixture screw along with the test light work better at 2500 rpm for setting mixture?
Also Wonder if the engine temp sensor is slowly enriching the mixture ? I do know when the last temp sensor went bad my engine was flooding out. Guess the first thing is to check the temp sensor operating Ohms. or just put the new one in.