I need to convert rear for bolt on. Its constantly slipping, simply because the dropouts are flat and dont have any engraving.
I think all frames with horizontal dropouts need replacable dropouts on inside and outside.
With a engraved pattern, or rough surface compared to being flat.
I definitely agree with having the scored drop outs on horizontal frames. I just sanded mine down a bit then cranked my bolts down. seems to be holding up well.