XY Dial Gauge Mount for Solidoodle

I had been using Neil Martin's dial gauge holder which can mount a dial gauge in X,Y and Z - http://www.soliforum.com/misc.php?action=pun_attachment&item=77&download=1.

However since I changed the stock Solidoodle extruder to the MK3 http://www.thingiverse.com/thing:40711 I can't use it anymore. The Solidoodle is prone to backlash in Y unless the belt tension is just right, and a dial gauge that can be mounted in the Y direction is essential. It is hard to know if you have it calibrated co