I used both the metal and plastic one (the original) and the plastic has far less leaks (plastic on metal) than the metal one (metal on metal).
You need to get some silicone in your mags, so you can either put it directly on your mags valve or on the propane tank valve before screwing the adapter in. Your choice, either will work.
Originally Posted by L473ncy
If you're not a "Sciency" type of guy, if it ain't broke don't fix it, but if you're an Engineer you'll probably have the world view of "if it ain't broke, it doesn't have enough features yet".