Jay about 2.5 years ago (summer of 2018) I did a study on the Rochester B and BC models. Maybe you saw it or some of it if you were searching on this site. This link should take you to part of it:

https://tinyurl.com/vpk6a2x

Toward the end of the study I showed everyone how you could straighten warped castings using a gas bbq grill, a 4" x 6" flat piece of 3/8" thick steel and 4 bolts/nuts/washers. I got most of these back to within .0015"~.002" variance between air horn and float bowl and then I rebuilt & sold all of them here on the forum for just what I had in them...or less in a couple of cases. It isn't the float bowl to iron throttle body that warps. It is the bowl to air horn (the top plate on the carburetor) that warps and when that happens it causes loss of vacuum (which makes the power piston fail) and it will add to the seepage problem at the top...where fuel dribbles out of the joint. What Carl said is correct and I wouldn't make changes if none are needed either. Good luck!

~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end