Bill, you are right.

In Germany, we call this "Doppelpassung" and during my engineering studies, one of the first things, my professor in mechanical construction taught us, was to never never never construct such "solutions".

Achim


4 aircooled cylinders, 7 tires, not waterproof: my m3w Bluebelle (2013) and my 2CV Gundel (1990)