I can't seem to figure out how to connect the two for mpe operation: Mpe in GR1 is enabled, the sensel is connected to the gr1 via usb, but the gr1 is not responding to the controller. I also don't see the incoming midi sysmbol in the gr1, when I press sensel keys. Both devices have up to date firmware. Anybody tried the two together already? They are supposed to be compatible in standalone, right?