It is metal to metal..I talked to Mikes and they said they had the bushings, just needed to know the size. I also called and talked to UREMCO and they said they would rebuild the carb and fix the throttle shaft issue for 185.00... sound like a decent deal?
My shop guy said he could do it if I got him the bushing and the correct size bit to ream it with... Im not certain on what is the best chance to get it right, and not have to redo anything.
I'll sell you my 1100 I bought from Summit if you like. Bought in Sep 2016, ran for a few months then removed it to test 2 Holley 1940's that I rebuilt and just never put it back on. It has been in a big Ziploc bag the whole time so I bet it would fire right up.
WHENEVER I get my 66 back from the body man I'll be installing 3 Holleys ;D so I don't need it -Jeff