Welcome Hellcat.These guys are talking carbon fiber,but the advice to you was on.Bondo or plastic filler will soak up water,gas,anything.Have it welded by a good welder and if you need to grind it don't grind it flush,leave some of the weld and melt it out with bondo.You'll need to put down a coat of good epoxy primer first because bondo has minimal adhesion to aluminum.It sticks but not to the point I'd trust it with a motor that shakes the bike like a Harley design will.I'm surprised a factory painter did this,he should have known better.