Get yourself about an 18 inch screwdriver. Use the handle to tap on the side of your carburetor. Seems to work best for me, when the engine is not running. Could be anything in there, that is causing it to stick. Since we can't buy Ethanol free gas, here in Arizona. Then, we have the heat. I wonder if the Ethanol has a tendency to crystalize. I had it happen to me a couple of times. I have a Carter YF on my 53 3100. I took the advice of a friend, and dumped some Stabil Marine, in my tank. It is supposed to combat the Ethanol. It is a problem for boaters as well. So far, it hasn't happened again. Just something to consider. Good luck with it.
Rugo
