Large Bed support for Printrbot Simple Metal 1403

This upgrade to support a larger bed on the Printrbot Simple Metal 1403. I have used it with a 12" x 18" bed and works great! It adds a 3rd 8mm rod and 2 more LM8UU to keep the large aluminum plate from sagging and wearing out the 4 stock Bearings.

used the Stand from thing number 543482 to create the support bracket.
http://www.thingiverse.com/thing:543482
Modified the bed rails from another thing but now that I go back I can not find it, If you created the bed rails let me know and I will