4kq leaking r-12...

[Richard J. Andrews]

help...
i'm losing r-12 in about 2 days...
high pressure drops from about 220 to 150 in 48 hours...
changed compressor, compressor seals, drier, o-rings, condensor..
i'm thinking evaporator leaking...
i did charge with r-12 UV dye but did not see anyleaking under the hood..
how can i get to the evaporator on this car easily?
or is this a dash removal job?

TIA!
rich
'86 4kq