[at@arne-toft.dk]

Slot it SCP 3 controller on Scalextic ARCPRO the trigger works fine wireless but the 4 ajustment pots have no effect at all any one here knows about what to make them work.

[MrFlippant]

The brake adjustment does not work, because Scalextric Digital does not support variable braking. All of the other knobs work, because they effect how the throttle is applied.
Watch this video to gain a better understanding of the other knobs and to test yours.