I got a leak...so no more refrigerant. Has anyone used any UV stuff to find leaks? I picked up this stuff (pic here (http://www.cs.rit.edu/~cxv1089/hosted/uv_stuff.jpg)) at the store today and I might give it a shot. Hints/tips/words of advice?

Never used that stuff, but you can sometimes see the leak without it. Mine was leaking at the hose that goes from compressor to condenser, right where the hard tube connects to the rubber in the hose. It looked oily from the pag oil in the a/c. Mine was due to my FMIC pipe pressing against the hose. Might want to start there.