Ah wow, layer height had the biggest effect on print quality. And speed.
Ryan, I noticed on your parts page the new XYZ is listed at 11 hours. I printed it using your settings from http://www.vicious1.com/import-extruder/ (50% infill instead of 40%) and my print wound up taking ~16 hours. Did you tinker with them a little? I’m trying to figure out where the 46% increase came from.
Sorry if I’m bugging you. I’m a little new to this, and I’m still learning what changes are “safe” to make and what aren’t. Especially when printing upgrade parts for the middle assembly.