I have a leak where the compressor discharge hose connects to the condenser. It appears to be the gasket, not the hose. I called the local Toyota dealer, and all they can/will sell me is the hose with the gasket for $136.00. Does anyone know if this is just an o-ring or is there a gasket in there? Any cheap fixes? It's not much of a leak, but I only have 20 lbs of R-12 left and that's worth too much to just keep dumping into the system. Thanks for any advice.