I've been having a hunt for differing timing rings, and have scared up pairs in 28, 32 & 35 tooth. The Grand Bois Lierres will fit for now, and some Michelin World tours would be great for eat-em-up riding. I'm still hoping to use a pair of Hetres for my lighter weight speed configuration. If you ever need to refit your frame, the brass cheesehead bolts are designated 2ba. I ordered mine from Great Britain, an you can find them in varying size. I have a few in 3/4" for the sake of fenderline adjustment. The eccentric pinch bolts are Gripfast, and similar to the ones fitted on J.Taylor stems.