The good news is that I've secured a 500 gallon propane tank for very reasonable price and have been assured that there are no leaks. The bad news is that the supplier has informed me that there is no belly plug or connections on the bottom of the tank. My question for the Hearth Brain Trust is how to get the bottom connections installed. Is it easier to place a dip tube in one of the existing top connections or am I going to get a welding shop to cut a hole in the bottom and weld in male NPT threads?