Yay, after last Sunday's complete removal and overhaul of heater box... (with Alan D's guide
) I now got Air con 
...well as good as lol - I can now turn heater off and have cold blown air - sheer luxury!
and as I had to remove wiper assembly I abandoned my copper sleeve solution and drilled it for a self-tapper - looks very secure now
though I need to find a smaller screw lol 
...well as good as lol - I can now turn heater off and have cold blown air - sheer luxury!
and as I had to remove wiper assembly I abandoned my copper sleeve solution and drilled it for a self-tapper - looks very secure now