I agree, the current envelopes are a little weird (linear/not exponential?) It seems difficult to get sounds into the "sweet spot"

Not to turn this into a feature wish-list, but I do wish there was a way to change (or at least turn off) velocity sensitivity, either per-patch or globally. I know that was in the original plan/spec and was dropped.

I have a CTRLR panel for the JX-3P + Kiwi which makes programming a bit easier, I'll upload it to Files later.