Thanks. I'm not to PCP yet, and have to travel an hr each way to get a tank filled. So when I get the tank we'll make a day of it, stopping my wife off to some craft stores, and to lunch. I'm certainly not versed in this at all and appreciate the info. I bought a used tank a couple days ago, and just thought if possible it would be nice to start off full. All this make sense to me. Thank you again. Brian Smith