Actually, Ive done that too. Then one guy called me on it and asked why I put "freon" in and didnt charge him for it. I was dumbfounded. Sometimes, I just get tired of arguing. Its all easier now that I own the company but when I was working for that other high pressure company, you dont have time to argue. Time is money and it was wasting my time and my money. All commision based with hourly pay. Bubba