Nah, you just have to change the jets (orifaces). Propane is smaller, at the rate of .6 . I took mine out, and peened it smaller, then ran a .060 drill through it. Formerly it was .100. And turner down the pilot- my burner is out of a NG wall furnace. Less soot now, more efficient.
Leave out the regulator to go to NG, and drill out the orifice by 1.6 the size. Or maybe buy a new jet, they are sold separately.
So far, I've had more experience thinking than I've had brewing....you don't think they are mutually exclusive, do you?
72 batches so far,
48 wine, mostly Loquat, peach, plum, prickly pear
23 beers and ciders
1 Tequila, from a prickly pear wine experiment that didn't work. I call it "Prickly Heat"