Opz oplab and octatrack

Hi I’ve been trying to connect my opz and octatrack using straightforward midi cables and oplab. I have tried many different settings but the notes sent by midi are long, unpredictable and weird.
Does anyone have some suggestions of a basic set of instructions on midi settings for both machines? I have tried so many combinations but nothing makes any difference.
Sync works fine between both, connection to my arturia keystep with different channels no problem at all so oplab is working ok I think.

Thanks so much!