I've had a local shop rebuild several carbs for me over the years with excellent results. They rebuilt an updraft carb for Doughboy (235). The also do business through USPS. If you would like their contact info, let me know; or you can look them up.

K&K
Frederick, MD

~ Victor
1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery
1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD
1957 3100 - moved on
1959 C4500 Short Bus "Magic Bus" - moved on
1959 G3800 1 Ton Dually "Chief" - moved on
1958 C4400 Viking "Thor" ~ moved on to fellow Bolter