Oh, also meant to mention, someone on another forum said there was a way to reset the HVAC system on these cars and that someone had posted it on a forum somewhere, still not found it yet...worth a try though.

I feel for you fella, I'm having similar problems front passenger side warm, drivers side cold after car is up to temp but warm whilst warming (if that makes sense). Rear heating also cold. You seem to have done more diagnostics than me so far as I'm still searching for a warm covered area to...