HERE is Jon's Tech Tip on straightening the castings on a Rochester Carb. Open the link and then download the 2nd PDF file. It takes a bit of setup to straightening a carb that might not be within everyone's capabilities.

I think your best approach would be to find a Carter YF carb and rebuild that.

Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.