Printrbot Simple Metal Z-Axis Upgrade Threaded Rod Stabilizer

The Z-Axis upgrade for the simple metal is awesome, but with one drawback that I found. The "wobble" on the top of the Z-axis threaded rod when homing the printer or when making a large Z-move can be troublesome. This stabilizer slides down over the Z-axis threaded rod, just underneath the handle (if you have it installed) to keep the threaded rod from vibrating during those large Z-moves.

I haven't tried it with a print taking complete advantage of the new Z-axis dimension,but based on movin