HOLLEY 3310 750 REBUILD HELP

If you had gas dry up in it I would get a crock pot, just for garage use.
Mix simple green and water, about 50/50.
Tear the carb apart and boil it for a while, do not leave it in there for too long or it will strip the anodize off the carb.
You will be surprised and the garbage that is left in the bottom of the crock pot.