Synchronized Z Axis for BLV MGN Cube

I really can't stand auto bed leveling. With a sufficiently rigid and flat bed, it just isn't necessary - set it once and forget it.
When you add multiple Z actuators to the mix, you end up with the opportunity for them to get out of sync and throw off your bed positioning.
By synchronizing the two Z actuators with a timing belt, you can avoid this issue all together.

Obviously I am not the originator of this idea, but I haven't seen it implemented on this printer yet.

This design sti