So the air-con is working fine now
Three leaks were; schrader valve, receiver/drier, & evaporator.
According to FCA the the entire hose needs raplacing to rectify faculty schrader valve.
So thanks to Ian at
Aitkenvale Auto & Dyno for persevering until they found a suitable valve.
Managed to source a receiver/drier from Spectra Refrigeration for $20.
The hole in the evaporator was right where the leaf litter had accumulated
