GLTHFJ60, I rebuilt my first carburetor in about 10-12 hrs. I'm pretty anal so I cleaned the outside body of the carb as well, even though it's only aesthetic. I did the second one in 4 hours. If you want, I would sell you my spare rebuilt carburetor. I know it works and it works extremely well. I also have a spare float needle and spring that you can test out on your current carb if you think that's the problem. All I know is that when my float was stuck open, there was fuel pouring into both barrels and overflowing into all of the vacuum lines.
If you have a digital camera, take pictures of the carb at all angles before disassembly noting where all the linkages and hoses go. Then take apart the carb slowly. I used baggies and grouped parts that disassembled together. Get a small brass brush, lots of carb cleaner, and a canister of air. There are 3 main segments to the carburetor. I tried to keep each one separate, so I didn't have a mess of parts to sift through when reassembling.
Email me or PM me if you do run into any problems or want my spare carb.