Got it all back together a couple of weeks ago. The blower will still only work on speeds 1,2 & 3. 4 has no effect even with the controller giving 4 different ouputs. Must be the controller. Managed to repair the main flow diverter above the fan but not able to locate a flap to control the top vents, at least I can get cold air in the footwells.
Does any one know if the Unwired Tools modification will work on the R 129 ? I sent them an e mail but no reply yet.
N T-J