Shifter!

Here's the new shifter from Faster Minis, along with the old one for comparison:

From Motorcycle restore blog

The only problem is that it doesn't extend away from the bike as much, and it has that square corner where it folds. This is kind of a good thing too, in that I don't think it will leverage against the shaft as much if the bike goes down. I'm going to file down that corner so it doesn't rub, but I knew about that going in, from the guy who recommended that shifter.