I run a Rochester B style on my '53 235. I purchased a rebuild kit from NAPA, but the one they sold me was not correct. I had fuel issues up the wazzo, so after all new fuel system, tank to carb. I was stumped. Went back to NAPA and got out the old book, still nothing. I went back and did my own investigations on the NAPA website and found the right carb kit. Rebuilt the carb again, and runs like a top now. Was having the same fuel starvation problems as you are describing until I found the right carb kit number. I found my carb kit by looking at the very distinct accelerator pump. Kit number on mine was 2-5194A. Did not come up on NAPA's database at the store, but was online. Cost me about 12 bucks.
