Trying to set idle and due to dieing when in gear after it gets warm. Need help.

AJ/FormS said
You know what, I just thought of somethings. all this nonsense started after the new float went in, right? And the new float was brass. Was the replaced one also brass? Cuz IIRC,the float settings are different between brass and nitrophyl.Perhaps the fuel level is too high or it's not stable. What if perhaps the perceived float problem was really a float-valve problem? Hmmmmmmmmmm

If the fuel level was too high it would stall with the rag placed over the carb. If I were the OP I would also dial in spark advance just short of detonation and see if that cures the week idle. My old slanty liked a richly jetted carb and more initial advance or it would stumble.