Thanks to you all for your help and advise. We made it in relative comfort to Petoskey, MI where the temperatures are much cooler than Knoxville, TN. I had only 5 lbs of R12 to charge the system and probably need an additional 3 to 5 pound to top the system out. Hector, you are on target with getting the system leak free and I will work on this. Thanks once again and I will go the ebay route.