I'd go for trying to straighten the existing one first too. I mean, what's to lose? If it doesn't work you still have to make another, but if it does you're ahead of the game on many fronts. Although this may seem a trivial comparison I made a similar repair to the main shaft on a Singer 306 sewing machine. It too had been dropped on it's end (I suspect) and the shaft was kinked almost exactly like yours. I figured what the heck and gave it a shot. By some stroke of luck I managed to get that darn thing within a hair and it was back in the machine with no discernable runout on the handwheel whatsoever. Aside from just being a nice machine to run I love using it just because the repair worked out so slick. I did a short post on it here if you want to see how I went about it..
Finished (for now) the demagnetizer. I can report my version does work. It is a lot better than the Wiha tool commonly sold. The Wiha mag/demag tool leaves a lot more residual magnetism. If the delrin were to spin relative to the aluminum, I was thinking of machining a slot in the delrin and...
www.hobby-machinist.com
-frank