I am in the middle of a rebuild with parts still soaking. I was lucky enough to have 2 NOS discharge nozzles, given to me by an 88 year old Ford lover who gave me his Holley stash. As careful as I was, I still broke the elbow off of one of the stuck ones. While the carb is apart, I noticed the jet sizes were 50. I happen to have two new unused jets marked 53. I am not a hot rodder and would like the car to be as smooth and efficient as it was when new. I hope someone can recommend which jet size to choose being that fuels are not what they used to be . I will do the Eaton conversion to make this carb compatible with the later distributer. It worked well on a teapot I rebuilt last year. I noticed it has a little click in the throttle shaft. To me , and I am not an expert, it did not seem excessive. I will consider one of the throttle shaft repair kits if it does not idle to my satisfaction. I hope anyone on this site who has done one of the kits will chime in with advice.. I appreciate all the advice I get .

Hello  If  you  have any wiggle in primary  throttle  shaft is  sign of wear (usually on left side). I have used them  with a lot of wiggle, only effect I had was inconsistent idle. The original bushing are bronze . Replacements are Teflon. Sal (hangs out on  Ford barn forum) thought shafts wore more than bushing. Kits are available with or without shafts. But if using just bushing you will  have to grinded throttle  linkage arm off  (left side of carb to get shaft out) and center bore and tap shaft for screw to hold arm  back on. Kits with shafts are all ready bored and taped. I would not  have done this but planning on boost pressure.