Flexible coupling with silicon tube

Tried printing few different rigid couplers, but got too much Z wobble. Then got the idea of using silicon tubing (leftovers from watercooling setups) as flexible joint between the rod and motor shaft. Spent some time with OpenSCAD to create parts for adapting 5mm motor shaft to match 10mm tube inner diameter + clamps. Works very well.
I have some Filaflex and thought about trying to make the flextube of it. Maybe some day...
Current model is for 13/10mm tube and 5mm motor shaft, 10mm threaded