I am trying to figure out if I have enough room under my 42 HEX for a 10lb tank. I know that the 10lb tank is 20.5" tall, (which will fit) but how much additional headroom would be needed for the Milwaukee MA957's guages and bubble counter? Next best option would be the 5#'er but it is only 2 inches shorter... I have a total of 24 inches (height) to work with. Anyone mind measuring for me? Thank you - Jeff