Eventually the burners get funky, kind of consumed by the fire that comes through them. I'd suggest you obtain and carry spare burners, especially if the stove
is no longer new. By the time you need the spares they may no longer be available. FWIW, I take ours off and tap them out, occasionally, and am a bit surprised how much mass they lose.
There's a guy on CF who has done extensive propane stove
rebuilds, sorry I can't think of his name, a Custom Google
search on CF or a PM to GordonMay, he may be able to remember, and he sure as heck knows how to find links!