Front Mount Stabiliser and Y-switch reverse.

Have been using Jon Lawrence 'Printrbot Simple, 300mm Y Axis-No Sag!', thingi
http://www.thingiverse.com/thing:242185. With the 'ExtendYFront2013Fan.STL'.
The top rail feels loose now so I decided to tie it on with a block and screws.
Whilst about it I put a bolt holder and made a switch holder so that I could reverse the Y-switch from front to back.
Printrbot seem to have made this change, and it's probably easier to go with, rather than resist. I thought it more logical before, cartesian co-ordinates, bottom left etc.
You don't have to take anything apart to fit this.
Anyway, the frame feels more solid on the top now.