Yeah Get a "professional" ! I hired an AC company to move a propane line in my attic and I found the guy somehow locked himself into the secure section of his van. He had been there an hour. Come to find out he had removed a fitting and the whole time he was locked in the van, propane was pouring into my attic (where I have a gas pilot light for my hot water heater). Oddly enough, there was a shuttoff valve about six inches from the fitting that was removed. Luckly, I was not on the evening news. You can do a better job yourself. Just make sure you check for leaks and use the pipe dope. It is not rocket science.