Printrbot 1405 Rear Feet

I needed some rear stabalizers for my 1405. I just threw these together in Tinkercad. I have yet to print them but will soon. These are for the Printrbot 1405 Makers edition to prevent tilt when using a bigger bed in X.

15 Feb 2015. So my hole spacing is correct, but the distance from edge to holes was not, so the guide I have to align to back of machine made it not fit properly. I had some spacers and it worked, but I either need to remove the back guide or increase space by 4-6mm