We found a Great CTC printer Modification at Thingiverse.
It's a guide that greatly reduced bending stress on the wires going to top of extruder assembly.
(We've had 2 thermocouple wires brake there)
It replaces the plate on top of extruder and it fits and works Great.
(we added this about 3 months ago)
Find at:
http://www.thingiverse.com/thing:340031
Click picture to see larger view:
Attachment 7277
