Raise Bed Height for Geeetech Aluminium i3

Specific to this printer, there is not much of a gap between the bottom of the X axis and the Z axis coupler, so much so that if I am not careful the X axis bottoms out on the coupler and the motor overloads.

Since I have also upgraded the printer with the Z axis wobble eliminator and made my X axis free floating (http://www.thingiverse.com/thing:1431036) this gap is at the very extreme when homing the Z axis. Any adjustments I have made gives very little gap between the X axis and the coupler. I have tried.

So I made these blocks that go between the bearing and the aluminium base plate to raise the plate by 5 mm. This has solved my problem as I have an extra 5mm and the axis does not bottom out. Also now I can tension the bed springs properly, where before they were extended to the fullest resulting in some backlash on the X Y plane.