IF not too late, as you are removing the carb from the car, disturb it little as possible, treat it like you are carrying a bomb. Take off the top of the carb as Jack said, gently carefully remove the float.( don't loose that pin} carefully scrutinize through the gas, the bottom of the carb... see if there are any fines there. Sometimes they are so fine you cannot see them. Either way, and if you jostled the carb pour out the gas through a SINGLE sheet tissue letting the gas go into a waster container. Look at the tissue, if small fines were present you will see them on the tissue. If fines are present, could indicate your gas tank has some rust developing, or the lines... if you see bigger pieces in there, that can be diagnosed.
I should do another series of pics or vid of carb cleaning.....
Matt
