What type do you have?
What software do you use to generate, check or fix the g-code?
What slicer do you use?
Are you pleased with the printed products?
We have a Makerbot Replicator 2X ... http://store.makerbot.com/replicator2x.html
Using gcode viewer from http://gcode.ws/ for checking/fixing & reviewing the g-code & toolpath. Excellent program.
Currently using the latest Makerware slicer with good results.
Also testing Simplify3D from http://www.simplify3d.com/creator/ with good results. It gives lots of control.
So far pleased with the results, but have had curling problems on larger pieces.
Will post some images of parts soon.