I have these random problems which were recently aggravated by a filament jam (filament roll was jammed). Soon after starting a print, the extruder temp drops too rapidly causing an alarm. It appears to be the direct result of movement of the cartridge thermistor wire. Is there a "best way" to run the thermistor cable or provide strain relief ? I have a strain-relief mount on the extruder stepper motor and cable ties to limit movement of the thermistor wires during printing. I have attached a picture for reference. User error - or - failing wires - or could the grub screw be a wee-bit too tight ? I have run PID tuning several times and still have this issue.