Z axis stabilizer for R1

I'm sure this has been done before, but I drew up a stabilizer for the R1 that keeps the threaded rod from shaking. The part snaps onto the smooth bearing rod and holds the top of the z threaded rod steady. A little bit of grippy tape wrapped around the bearing rod gives it a nice hold to the smooth shaft. You can download it here:

http://www.thingiverse.com/thing:587583

 

Have you tested this yet? My experiments with securing the threaded rod was rather fruitless

 

My rod was wobblier than most people's, but yes, over the last week that i've had it on, i've noticed an improvement in print quality.