John V6 of this parish is up to speed on this having had issues with PAS on his Brookland's 3.7 Roadster. Thread here. I believe there are three variants with the earliest being provided by EZ.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone