I am having a little tussle over some work on my '09 gen 2 997 at my local OPC in Reading and would appreciate some advice. I have up till now been very pleased with the experience of buying through an OPC last March and specifically wanted the "comfort" of the official warranty having run a 996 under one some years ago. This week I had booked my car in to have an inoperative drivers door lock repaired. My last service was in March this year so I was surprised when I got the call from the service department at Reading to say that in the vehicle inspection they had identified several things which needed doing in addition to the door lock. The biggest being a replacement steering rack which would be covered by warranty. There are a few others which would be chargeable items the one which is the most irritating is that apparently the belt drive tensioner has failed in that it is not returning the tensioning pulley to the correct tension. This failure apparently being due to "corrosion" therefore a "wear and tear" item and not covered by the warranty. £500 please. So I've been digging and cannot see how this part can corrode and fail, most problems seem to normally relate to the piston not returning due to mechanical failure (which if that was the cause would be covered under warranty). I'm a bit ticked off about this more as a matter of principle than anything and wondered if anyone else has thoughts or experience of this part failing and if so the likelihood of it being wear and tear? Many thanks for your help.