Y-Belt Alignment Helper for Prusa MK3 Bear Upgrade

I am a big fan of the Bear upgrade for the Prusa i3 printers (See details here: https://github.com/gregsaun/prusa_i3_bear_upgrade ). When i was assembling the upgrade, I found it quite tedious to get the Y idler and Y motor holder/pulley aligned with the belt center that is determined by the belt holder. The belt holder is out of sight underneath the frame (and the heatbed, if you've already installed that). In addition. to adjust the motor holder requires removing the motor.

This simple tool