PrintRite DIY Printer Ninjaflex Drive Modification

Modified this: http://www.thingiverse.com/thing:788358 to work on the PrintRite DIY 3D Printer. After printing in ABS with 100% infill, you'll need to file (or cut with an X-acto blade) some grooves in the main plate next to the lower filament hole to allow the idler wheel to get close enough to pinch the filament against the drive wheel and turn freely. You will also need to remove the original plastic cap on top of the extruder heater tube and adjust the heater tube height to mate up to the