For this evaluation the customer system was not cooling and when I gauged up the customer had a 1⁰ Subcool. A previous company had come out and added a refrigerant to the system 2 years ago and the customer stated she paid $100 for that however they could not find a leak. I like search the evaporator coil for well over an hour and eventually found the leak at one of the capillary tubes that was rubbing against the coil plate. I showed the customer what I found and she wanted to just add refrigerant because right now she cannot afford to replace the coil and also does not want to replace the system because they are putting the house on the market for sale as is. Customer wanted to get another quote for refrigerant as I quoted her for 2 lb of refrigerant since her system held close to 8lbs.