CTC Stuttering filament feed

[ebam]

I have recently replaced my nozzles, ptfe tubing and cleaned the gear wheels on my CTC dual’s printer head. The stuttering of the filament feed happens on both sides with a clicking type noise. It makes the filament that comes through have very thin break points wherever it has stuttered. Had fitted spring loaded extruders to see if this helped the probem but the feed was even worse and would stop for several seconds before manually pushing the filament or it would start again spontaneously. Changed back to original extruders because of this. Nozzles and ptfe tube are the correct size, everything is tight etc. Print is not good due to this, don’t want to keep wasting filament or possibly doing damage. Any suggestions what might be the cause of this?

[wirlybird]

If the extruders are clicking then something is binding the filaments feed. This could be wrong size PTFE tube or it is getting kinked or squished when installed. This seems the most likely things since both sides do it.