N350 is stick powder: it looks like micro rabbit feed.
Seems that the only powder manufacturer locally make powder that doesn't play well with my measure.... ain't that always the way!
Well, the PPM is not a bank breaker, so may be an option. It would still be nice to fix the auto-disk, but if the powder type is an inherent problem, then perhaps I'm flogging a dead horse.
Maybe I should just keep it in case other powders become available in the future
I read that link about lowering clearances. If that problem could cause granules to fall from the die opening later in the loading cycle, then I'll investigate it, but when I shone a torch light through that space between hopper base and disk, it really looked to narrow for even the powder to get through.
I may experiment tomorrow before reaching for the wet'n'dry: if I take sand too much off, it might bind.