Thule single step

Hi,
I own a 2014 Winchcombe & the Thule step packed up.I'm after the 2 x Pinion wheel's for the Bosch motor.Does anyone know where I can purchase.I've tried the bad Thule Service centre & they can supply the complete motor only?
Many thank's Andrew

The plastic gears broke in the motor on ours and I bought a brand new Bosch motor from this firm https://www.bowersautomotive.co.uk/index.htm
The Bosch part number is on the motor, it was about 5 years ago and the price was under £30
I adjusted the step timer run setting in the control panel to ensure the motor wasn’t trying to push the step out past the limit of the linkage, no more problems since 

Chris

Thank's Chris,
I'll check out