Drivers door window fault

[Dickie Dastardly]

I've an intermittent fault developing where when closing the drivers door window in small increments it gets to halfway then starts going down again; if i try and close on the full i.e rotate the control knob 180plus degrees in one sweep it often will close, if I lock the car it closes no problem.

Any similar experiences before I start fault finding?

Thanks
Richard

[Dickie Dastardly]

Have found the fault which seems to be in the actual small electrics behind the window control knob, I can't find those listed on any parts sites, anyone actually changed one before?

Thanks