AC issues

[truck2569]

My Ram 3500 has a slow leak in the AC system they can't seem to find any suggestions, Dye has been placed in the system twice.

 

[truck2569]

My Ram 3500 has a slow leak in the AC system they can't seem to find any suggestions, Dye has been placed in the system twice.

What I have had replaced, AC Compressor, evaporator, lines, Condenser,

 

[Daw14]

A different shop .
Gauge connection ports.
Look for dirt covered a-c parts , a-c systems have oil mixed with Freon ,when it leaks it attracts dirt.