Have recently spoken to Tim or should I say exchanged text's and he is now charging £550 for the block shimming and going by the amount of positive comments on his work from the Volvo boys mines going up to him next month to have it done and have the RS internals fitted at the same time which should be more than adequate for the RS turbo.
He must be good as he is fully booked till then or it would have gone up sooner so he can't be too bad at what he does