The o-rings on my main jet and needle/seat needed replacement as they almost always do. I was also advised wisely by others on this site to replace the o-rings on the t-fittings that link the individual carbs together..
A company called Dayton Seals and Packing in Dayton OH got a perfect fit for the t-fittings, and the fuel resistant ring they supplied is part number 568-011 VT-90 They are $.50 each and fit great. They also supplied o-rings for the needle/seat and main jet needle.
Part numbers are 568-009 VT-70 and 568-006 VT-70. They were a little tight,so I chucked them [the jets with o-rings mounted] in a battery drill and sanded them down with 220 wet-dry and some light oil like w-d 40. They fit great and did not take a great deal of skill to accomplish
Six dollars thirty cents for a rack of four is hard to beat.
I asked if you guys could call with these part numbers and a credit card, and they said yes. [937] 228 2300
My carb is a 096A on a 1977 cb550, but I suspect that it shares in common these fittings with other bikes as well.
