Thread update - dash is out. I finally decided to remove it as there was water ingress on the driver side (onto the horizontal kick panel under the dash to the right of the steering column) and, from externally, it didn’t look like it was coming from the pollen filter housings. Good news is that it’s not the windscreen so must be pollen filter housings unless anyone else can suggest where it might be from?
All HEVAC motors and flaps are working well with none of the groaning I heard prior to dash removal. Any suggestions or was it just the onset of cold weather?
All duct sealing has completely disintegrated particularly the windscreen vents seal to the ducting underneath - just powder now and one bit of it was never positioned properly from factory build - it had been pushed into the main ducting on its rear edge!
The errant dash to screen rubber trim has been refitted into position - it’s clear from the way this needs to be rolled/folded round the dash from below that fixing it in-situ is impossible - well impossible with my fat fingers.
All wiring and connectors behind both the left and right kick panels are in very good condition so that’s a bonus.
Next job is to renew the heater matrix O rings now I have really good access. Question is I will want to test them out for any leakage before re-installing the dash by running the engine up to temperature. I know I will have to temporarily reconnect the instrument binnacle but are there any other units that should be reconnected before I switch on the ignition and fire the engine up.