After a lot of banging my head against the wall, I finally got the hi-hat working flawlessly and I thought maybe a couple screen shots of my settings could benefit someone else.
Bear in mind I am not using any brain, just straight from eDrumin to a MIDI interface to control SD3.
Remember to calibrate for a Yamaha Hi-hat in SD3 first too.
And a just fer fun pic of my kit. Still tweaking and it'll be positioned elsewhere in the studio when done, but it's working pretty well so far. Magnatrack triggers for the drums. Yamaha cymbals. I'm not a drummer, so it's been....an adventure.