Keep hounding the dealer till they fix it. Make sure they know about it even if they can't fix it. I had a similiar problem with another bike it was months of going back before they found the trouble. As long as the same problem keeps cropping up you should be able to keep going back after warrenty expires. Hopefully they can fix it before hand.

A dog, a bike, a ute, Now in the deep south.. Newcastle. Cold winters, cold rain Come on summer