I ended up just making them out of rubber from a truck fender liner and some shears...
jleewebb wrote:I think I got them at Home Depot...took the trim rings with me and selected washers I could cut down to fit...
You might want to look through my build thread here: http://www.honda305.com/forums/cb-77-re ... storaqtion
It's pretty long but might answer some of your questions...(I get into forks on page 2)
--Lee