[TR] TR3 carb bushings

[Frank Fisher]

i try to support T-R-F every opportunity, but their web site and printed literature just confound me.
some time back i seem to recall they had a carburetor kit that used bushings instead of oversize throttle shafts.
as i have a brand new set of throttle shafts that would be a less expensive route.
i can call TRF tomorrow for the part number.
but it seems to me, i would have to ream out a lot more meat than the oversize shafts. no?
has any one used these and if so how did you like?
thanks
Frank