You can just take the wheel off (using the steering lock makes it easier to undo the nut) and centre it ... I like mine to be dead straight Won't cure any tracking problems of course ...

Tom

I think I could have lived with the tracking on A roads but on the Motorway it felt quite twitchy and overly keen to change lane!
It's gone to a different garage now to have it reset and they've said that the other place had not done a particularly good job and it's now a lot better.

If the wheel is still off a bit off I might just do that Tom, our car doesn't seem to have a steering lock though!