Solidoodle 3 Build Platform Stabilizer

I noticed that the bed would shake and I figure that's really not good for prints. I "field tested" this a LOT to make sure I didn't loose any z height. It rolls along the frame perfectly. There are only 2 parts you need to buy which I've linked. I tried to design this with as little fabrication as possible. All you need is a hack saw and mayme some sand paper to smooth the edges of the rods.
http://www.homedepot.com/p/Unbranded-1-4-in-x-36-in-Plain-Steel-Cold-Rolled-Square-Rod-801197/204273977
http://www.amazon.com/VXB-Skateboard-Bearings-Double-Shielded/dp/B002BBGTK6/ref=sr_1_5?ie=UTF8&qid=1416070512&sr=8-5&keywords=skateboard+bearings
Video of it in action
http://vid5.photobucket.com/albums/y180/Masurrao/3d%20Printing/20141115%20181406.mp4