So you're saying no noticeable DMS from a 30 min boil with pilsner malt and then no chilling?
The internet experts would tell you to expect a glass full of cabbage
I use this and it works well http://www.raysoutdoors.com.au/online-store/products/Campfire-Megajet-Burner.aspx?pid=215772#Combo
Paid 139 for it but it was ready to go out of the box with the stand and high pressure reg
You'll probably end up paying that much anyway with the 4 ring and have to...