Ok so I discovered another potential bug.
Midi clock sync not sending from sync port B.
Tried clocking keystep.
Works fine from port A
No response from port B
DN is master clock
Keystep is slave clock
Might be able to get around it by sending DN clock to DT then using thu on DT to clock Keystep then send Midi notes back in to DN through the in port
DN is set to not receive clock, set to send only.