Vt v6 aircon leak?? help!

[shdai]

gday guys just got my a/c regassed about 2 weeks ago then went to chuck on the a/c yest and all i heard was a hissing sound coming from the vents. I was told i needed to replace the compressor dryer and condenser which i did but theres still a very slow leak. i got it looked at under uv light 2day and the mechanics found nothing, they reckon its the evaporator behind the dash...What do you guys think? Any help/advice would be great.
Thanks.

[wamboin23]

did you replace all related o'rings. especially the seals on the compressor, they leak if you breathe on them wrong...

[shdai]

yep got a set of fresh ones when i put on the second hand compressor. i havnt replaced any hoses cos i wasnt told to and there isnt any evident leakage on them either...any other suggestions??