MIDI clock EXT receive does NOT work

I have updated to the latest firmware 1.25, when I select to receive EXT MIDI clock from another synth it only works if I have it on the same MIDO channel which also transmits note data, if I change MIDI channels even with EXT clock receive in it does not receive clock, the tempo knob still controls the tempo, whereas the manual specifically indicates when EXT clock is selected the tempo knob should not be changing the tempo. Essentially I am trying to send MIDI clock without sending MIDI notes, I can do this with every other synthesizer I have yet it does NOT work on the Super Gemini. The Gemini also likewise will not send sequencer or arp data to another synth. These seem to be normal features that should work. Hoping for some help with this!