Based on JST's datasheet and also measurements from nerocides' 1-8s JST-XH connector models, a 15s (16-pin) JST-XH. Solidworks and STL's included for genuine, 0.4 nozzle, and 0.25 nozzle 'tunes'. This was my first time using a 0.25mm nozzle. Tuning retraction well is especially important as small moves change nozzle pressure greatly, and parts of this are practically a retraction test. I had best results at ~10mm/sec and only 0.07mm retraction, any more and and I had voids in the model but even so little greatly reduced stringing. Prusa MK3s with Skelestruder.
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