Yeah. It's not a defect, it's a feature. You have one of the few "Flared Fin" factory heads that afford enhanced "Venturi Vomoblastification", as the guys in Marketing say.
I've bent back many fins on different bikes with complete success. The caveat is there cannot be any cracking, otherwise the fin will most likely break off. I use an oxy-propane torch, spoon-type tyre lever and a bar of soap. The fin has soap rubbed on it to give an indication of temperature. It turns brown (then black) when the maximum temperature for the aluminium alloy is reached. I run the bike up to temperature, rub on soap and then using a small angled nozzle kept on the move I heat the fin where it needs to bend whilst applying very gentle pressure with my tyre lever. The fin will bend like Uri Geller bending a spoon. It doesn't need much heat or much force. If in doubt leave it alone and certainly don't try to bend it cold; the metal work-hardens where it's bent and when you try to straighten it the fin will bend somewhere else. Or break along the original bend.
Thanks, everybody. We'll call it a beauty mark ;)
I can't use heat so I'll leave it. There're just too many hours of detailing (and a carburetor) in that area and I'd never match the finish the factory put on the AVL heads or fix the burned wrinkle-black on the cylinder.
Thanks, everybody. We'll call it a beauty mark ;)(http://)
Picture of the bloody bent bastard:
Picture of the bloody bent bastard: