If you have resonance occurring in your fuel line, it could be potentially dangerous, My uncle and i were discussing Car carburetors once and he says if the the resonance is at the "correct" frequency it causes the fuel to froth up and that can damage your engine, I'm not sure if your fuel behaves differently to Petrol or if it is simply not an issue, (as stoves are pretty simple compared to engines) Bottom line is that if you disrupt or rather alter the flow of the fuel, it eliminates or reduces the resonance. A good example is the mesh that is put on certain taps, take note of how it alters the flow...
I do not think the resonance is a problem in bp stoves, I have not seen any problems other than noise which is very annoying.
P.S: Tony do you make your own cannister stoves?
Yes, these are some of them, I hope to have them all together on my own site soon