Get a shorter tree so you don't have a 3' of leverage to knock it over, then just tighten it up and go. Don't expect to run 4 burners or get a good rate of flow to a blaster off of a 5lb bottle. Propane delivery is a function of the surface area that can off gas. That is why some bottles are short and fat vs. tall and skinny for the same volume.
(seven two 0)-298-2242