I recently tried to use a V6 hot end with a 3 mm Bowden setup and failed due to the high back pressure created by the hot end with a 0.4mm nozzle, I am going to buy a Volcano conversion and was wondering if it would be a lot lower force with the volcano with a larger nozzle and I could have success with the 3 mm set up on a remote extruder drive and Bowden feed? I'm using my own design of extruder including my own hobbed bolt made on a lathe with a 4 mm tap, running on a Cartesian platform using vee rail?