Repaced Simucube board - Help getting it back up and running please


My original board blew the Mosfets apparently, so I bought a replacement board, I have installed it and now I’m trying to get everything back up and running.

I have Granity running and connected with the same settings as before (copied from screen shots I took before it blew). Have used recommended (I believe) Simucube controller settings.

I have a problem in Rfactor2 (to be fair only sim I’ve tried so far), where the steering will snap to the end stops of either direction from centre and be heavy to turn back to centre then snap the other direction.

Can anyone advise what I can try next?