"I suppose a simple way to test my heat feedback theory is to run the stove for a while and then feel the top of the canister. If the top of the canister is at all warm or even simply room temperature, then there's heat feedback going on. Normally, a canister should be pretty cold after a stove has been in operation for any length of time."
True, that. Absent a windscreen I often find canister temps drop during use, I suppose from evaporative cooling.
I'm still lobbying for further disassembly. Inquiring minds want to know!