I was thinking, since the v6 nozzle and heating block is the same as the Kraken, and the volcano nozzle and heater block attaches to the v6, then the volcano nozzle should be able to work with the Kraken, right? (assuming you use volcano nozzles for all of the kraken nozzles) If this is true, then I was thinking: What about using a 0.4 mm volcano nozzle and a 0.8 or 1.0 or 1.2 mm volcano nozzle together on a print, where the 0.4 mm nozzle would print the edges, and the larger nozzle would print infill? Hypothetically this would allow the exterior to keep to the tight dimensional accuracy of a 0.4 mm nozzle, while the interior would be printed faster and stronger with the larger nozzle. The results would be a compromise of the two nozzles, but I think could be a great option if you are looking for a stronger printed object while keeping dimensional accuracy. (This could also apply to a Chimera if you do not want to use HIPS for support material)