I've had a Birdy folder since 2006 and some of the hinging parts which allow it to fold are getting worn (i.e. there is side-to-side play, especially where the rear rack is bolted to the frame). Is it feasible to repair the frame by dismantling it and replacing all the bolts that allow it to fold (can you get suitable spare parts)? Failing that, is it possible to get a replacement Birdy frame? I've looked online but cannot find anything other that a complete new bike, which seems a waste as everything else works fine.
