BB gimbals for supasorn's dual-z

This thing allows you to add thingirob's BB gimbals (https://www.thingiverse.com/thing:2480577) to Supasorn's Dual-Z mod (https://www.thingiverse.com/thing:2163949).

I really liked the dual-z solution, but wanted a way to include gimbals or oldham couplers.

The standard thingirob gimbal will attach to the original mod, but there are two problems:
1. The gimbal adds too much height, so your nozzle can't reach the bed.
2. The left-hand lead screw will skew left slightly because the top is