Props to the author for a nice spool guide.  I made the rear main arm a little less rounded to let me print it without supports.

Also modified the gear assembly with the lateral long arm so that I could adjust the angle of the long arm to the gear.  Didn't like that once I set the angle, I had to disassemble to make changes/adjustments.  Used a spring from a pen for tension.  I printed the lateral long arm with only supports on the end where it's shaped to hold the actual ptfe guide.  The gear and the end of the long arm the gear goes into don't require supports (at least on my prints).  Pulling supports out of the teeth are painful at best, so avoid putting them there.