Hi I have a 1997 R reg A4 TDi and I was wondering how you remove the steering wheel in ordere to change the wiper stalk switch? I have disconnected the battery and removed as much associated plastic trim as I can and there appears to be two bolts in the reverse of the steering wheel itself which are recessed out of view. I'm not sure if they can be removed with an alan key or a torx key but neither seem to work they just seem to be stuck on? These may already be somewhat rounded off? Is there any other things to be aware of so I don't damage the airbags/immobiliser? If anyone could help I'd really appreciate it, cheers.