Yarns Poly 4 mode, Trigger 3 repeats on one key press the others don't

I have a weird problem with p4 mode.
I have 4 osc plugged into a 4 vcas and 4 envelopes.
1 ,2,4 trigger once per key press but 3 triggers repeats in sync with the tempo.

Does anyone have any tips what Its likely to be?

You have enabled the clock override setting to get a clock/reset on channels 3 and 4?

Its an original unit but I bought it second hand and I don’t know how its been configured.

I read the manual and Initialised it. I forgot to change it back to poly 4.
When I did so it was working great as expected.
I logged back on to leave a message to let people know its now working.

Best wishes