My heater control has never had the detent feel. It just operates in a smooth slightly stiff fashion which is fine. Consequently it was a surprise to hear of others discussing the detent action, which I can now understand given image below showing the ball detent holes.

[Linked Image]

Have I lost a ball scared

Richard

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