So ya, read the instructions more carefully when assembling the Greg's extruder. When I was tightening the second locking nut wasn't thinking and put a wrench on the bolt head instead of holding the spur gear (end result I turned the nut inside the capture in the spur). Nothing some epoxy couldn't fix though :P I also had to clean a bunch of globs out of the teeth in the spur as they were causing it to bind. Sure hope after I'm done tweaking and tuning my I3V 12 prints better than the supplied extruder was printed.