Aircon blowing cold on left but warm on right side vents E70

[Leslie]

The left vents blow cold and the right vents blow at normal air temp which has been warm this last while which is why its become more noticeable although I think it has only started recently.
The most likely cause seems to be a failing heater control valve which sits on the passenger inner wing , there are some very cheap ones on ebay Circ £25 new which I will be avoiding after buying a dud throttle valve last time which didn't work for my dpf issue. Going of genuine ones on ebay it seems the dealer would need 400 quid ! for a plastic valve but Autodoc has a Bosch one for a more palatable 100 delivered.

In other news after getting our ds3 mot yesterday I took a late cancellation and get the x5 mot'ed last night ..Result as otherwise the next date was mid September (waiting times are going back to months here in Northern Ireland again for the umpteenth time ) That's 3 of the fleet through mot in 7 days

[Leslie]

Well I changed the heater control valve on the passenger inner wing , didnt take too long 3 pipes but it doesn't seem much better .lost coolant has been topped up , if i put it to max its certainly hot and min its a little below outside temp while left side is cooling the air but it isn't brilliant either.
Im beginning to think a flap motor isn't moving now but I think that is a can of worms id rather not open. Willcheck codes later..
Its been a bad day found my 205 gti has sheared its alternator tensioner bolt in the pas pump and now ive jammed a torx bit between the inner wing trying to temove the alternator with a ratchet spanner on the torx bit as no clearance so now the ratchet will only go one way and we are stuck

[Leslie]

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Took the vlave apart nothing looks broken