Rpovey, Thanks for the info. I was having many issues trying to get the infill correct in Slic3r. I was getting great prints on the exterior. I had my A axis way off. I recalibrated (paying attention this time!) and the settings within Slic3r are acting as they should. BTW I was retracting 3.5cm and that is why it seemed so long and would come out of the feeder. The 3.5mm retraction is very tolerable LOL. Though i still get a little blobbing. Back to melting plastic. The Pink Panther bust came out great til a power glitch killed the process after 80000 lines of code (almost to the belly button). Are you all using backlash comp in Mach? My backlash is very low anyway but I got some strange reactions with skewing. I will have to try that again later. On to more accurate calibrations.