I am using a Rostock Max V2 with an E3D extruder and Bondtech QR filament driver. I am having random issues with the bowden tube popping out of the Bondtech Mating Part; I cannot seem to correlate the incidents with any particular action of the printer at the time the tube pops out. I have replaced the Mating Part (filament slips into it and is gripped), the bowden tube, and filament (both PLA and PETG) with no improvement. I have tried different tightness's of the thumb screw on the bondtech with no improvement. i have tried running without the "clips" for the mating device and with the "clips" in the mating device with no improvement. i am noticing a rather high (to me) band of temperatures around my "goal" temperature - if i want 227, i get between 220 and 230 degrees. i am used to maybe +/-3 degrees on other printers and don't know what the E3D with your software should give me. i have replaced the nozzle several times and that might have helped but i don't have enough data to make me believe that - i have tried .5 and .6mm nozzles brand new. when i do a pull test on the filament (both ends - driver and extruder) the filament is held well after i insert the filament deep into each device - what i am tying to say is i am WELL past the little teeth in the mating device and not right at the end of the bowden tube... let me simply with HELP - this is a pain in the xxx and i can be 12 hours into a 15 hour print and it can happen. has anyone else experienced this issue and more importantly defeated it....?