I’m posting this from my mobile so pls forgive me any typos. The throttle shaft on my AFB got stuck any time the car sat for some month so I decided to take the carb of, see whats going on and maybe rebuild it. I took the AFB apart, put the parts in a vibrating bath and cleaned up as much as I could. Getting down to the base plate and throttle shaft I found both heavily corroded, no wonder the shaft got stuck. The shaft also has a lot of pitting in the area where the corrosion on the base plate is. Please look at the pictures. Is the cavity in the top right bore factory or has this been eaten up by rust over time? I grinded out tons of - what I belive to be - sand, maybe from the casting process? The main question is: can these parts be rescued or should I get an new carb right away? The intake has rust in the corresponding area, so if that aint factory I guess I need a new intake as well. Pic #5 and 6 are from the top left bore, showing what looks like a weld spot from a former repair. BtW, the Carter is an A7A 4331S.