I don't care too much for the Teflon idea, though I can see where that would work. If it is lapped in and greased upon install, you just cross slap the wheel and it will pop off.. Cross slapping is hitting one side down and one side up simultaneously. Sometimes you need to hit them three or four times, reversing the direction of the hit each time...
You want a good tight contact with the taper. Keep in mind, I am from the 100+mph world and take things like steering pretty seriously. Had a tiller arm shatter at over 80 MPH going down river in the 90's in Oregon... Over the river and through the woods, never got to grandma's house. Scared the living crap out of me, all because of a poorly fitting woodruff key in the tiller pin.
