Before I tear into the dash to get to the A/C evaporator anyone have anysuggestions?

A/C system works great, for about 2 days, after a charge. Leaks down to about 20 lbs static and stabilizes. Cannot find a leak anywhere with dye or freon sniffer. Even paid an A/C tech to try. Spent an hour this morning under hood and car and did not find any sign of yellow dye. Nothing. No sniffer chirp in the vents either.

 

found lots of tiny pin hole leaks on the bottom of the condensor.. only have done 2-3 evaporators on xk

 

also compressor.. rear and front seals.. and evaporator in and out orings..