Anyone install the cancel cam on a steering wheel??

I'm rebuilding the steering column internals in my 66 Barracuda. Now that I have a new turn signal switch, I've located all (most?) of the missing parts and epoxied the steering wheel hub back together, but I'm having a helluva time getting the turn signal cancel cam (spring clip that goes on the back of the steering wheel) installed.

Has anyone done this successfully before? I'm running out of ideas...