Ah thanks for the replies guys, I have tried and tried and that small hex wrench that was sent with the printer is just too big for it. I will run to the hardware store today and see if I can't find a smaller wrench. Honestly I have very little tools, and have never "drilled and tapped" anything before. But hey, what better time to learn? So if I cannot get that thing to loosen and re-tighten I will look more into that.

Really I'm looking to use my left extruder from my Flashforge on the left side of the CTC, but the nozzle is way off to be able to do that. I guess if all else fails, I will just take my right extruder from the flashforge, and re-do my setup on cooling with that.

"The Chinese seem to have a philosophy of "if it looks right then it will do" and socket head screws are often rounded on new stuff." <---haha yeah, that seems very true. All in all though, very happy with this printer for the price it was. So far...