Does anyone have problems with hubcaps rotating?

Putting metal stems in a nice original car like yours just would be like putting a Chebby motor in it in my opinion.

Just a light tweak of the grippers won't distort the hub cap unless you are trying to use a pipe wrench or something. Try something like a very small of pliers or Vice Grips. You won't touch the face of the hub cap unless you are bending something besides the grippers.

REFERENCE Only Picture because I couldn't find the back side picture of the exact hub cap on the car.