Ptfe length inside dedicated PLA extruder

Could somebody advice about the length of ptef tube inside the dedicated PLA extruder? I tired measure it by caliber, but got different results every time. Maybe Tiertime guys can give an answer.

You can cut the tube a little longer than it should and trim off the length until you get a good fit

Jason, the PTFE tube length is a very sensitive case. Once the tube inside is not comfortable to take it out and cut a portion without damaging the PTFE tube. On the other hand, the PTFE must not move inside avoiding and gap. So, should be a known length of PTFE.