I went with Larry Isgro as recommended by tclederman.
I called and spoke with him on the phone. Really nice guy. When I asked about payment, he told me I could pay after I got the carb back. I knew then he was an honest business man.
I sent him the carb and a check on a Friday. Got it back on Monday 10 days later. The carb looks brand new.
I installed it and after turning the engine over a few times it fired right up. Later starts were immediate.
I highly recommend Larry Isgro due to quality of work, turnaround time, and cost. Rebuild cost for my carb was 165 + 15 shipping. $180.00 well spent.

"Do not walk behind me, for I may not lead. Do not walk ahead of me, for I may not follow. Do not walk beside me either. Just leave me alone, you're starting to freak me out."

1957 GMC 150