I flew United on a recent flight to do a long section hike on the PCT and noticed in United's fine print that it allows canister stoves in luggage, but only if they are new and have never been used. I ended up going stoveless on that hike but now am about to fly a different airline to do a long hike and want to bring my canister stove, which is not new. Has anyone had a problem with an airline or TSA confiscating a canister stove? To reduce the risk of a problem, is there some particular way I should I wash or clean the stove to remove any trace of fuel residue? Of course I'm not bringing a fuel canister, just the stove; will get fuel and a lighter after arriving.