Another problem you'll run into on the 300g is that the bumper is a pain to get on.Took a bit more time,effort and skill than most every bumper.The 300g can only use 300g bumper parts,unelss your just replacing 1-2 grommets(normally doesn't happen with currently made frames).I'd just put some headtape for now,swap the bumper asap,be more careful.