What exactly do people perform to lower resistance in a Mag? Is it modification to the switch - tailcap - both? How much is there to be gained by this mod? The cap spring in a Mag seems pretty hefty to me compared so say a McClicky switch spring. The wire is much larger dia. and appears that it would flow current easier than a smaller one. Do resistance mods give you free lumens and a brighter light with the same battery/builb combo?