I have what at first appeared to be the usual heater problem of one side not working as it should. Having trawled the interweb for suggestions I decided to follow the writeup by 'kingfisher' and had a look inside the heater box from above. It's the driver's side that is causing the problem so I peered inside. I operated the temperature control while looking at the flap and shaft and discovered that it's still in one piece and still moves on the motor. But it does not move to it's full extent stopping short when blocking off the heater matrix and therefore still produces 'warm' air when set cold. Set the temperature to hot and the flap moves and produces 'hot' air. Now is this because there is an obstruction or is the motor faulty? I intend to take the motor off at the weekend to investigate further. Also do you think it would be an opportune moment to re-inforce the flap shafts. I have some 10mm aluminium angle that I think would be ideal for the job. Fiddly tho'. Just one more thing, only one of the flaps is 'blue' the passenger side, the driver's side being 'beige'. Does this mean that a repair has already taken place? Food for thought.