Yea they do that ,and more than likely it was unleaded with ethanol . That shit will mess up a carb quick , my 24 flat slide was fine news years and last Tuesday it was shit .
My dyno testing was the next day so had to clean her .
First thing pull the bowl off unscrew the main jet and also the piolet jet. pull the slide out , the little air screw . Then get some acetone and soak the carb body and jets in it for a few hours . After the jets soaks find some small wire unwrap it and take one of the strands and run it though the jets , be careful not to break the wire off in the jets .also take an air gun and blow out every hole you see in the carb
Put her back together and it should be good .
And this time try to find some 100 percent gas, it won't mess up like the other stuff will .
I would say try race gas but you have to have a lot of compression to run it . With just a hemi head you don't have enough compression and the motor would acctually run worse .
Good luck if you have any ??? Just ask .