iPhone X (with case) bike mount - flex

* See updates below.

In looking for a new phone mount for my bike, I designed my own (not published) when I didn't see one that I liked. I printed and cracked it twice. Still using it, with some hook and loop cable ties.

I decided that I wanted to print one in flex material. My search came to Marrrs phone mount. So, I derived my mount from his idea.

A couple of things concerned me. 1 - Last mount I made, my rubberized phone case was really grabby, and wouldn't slide nicely into the moun