I have an extra crank pulley from a even fire 231 v-6. It is the same in every way to the pulley that came off our 350 except it has a small steel weight welded on the inside. I would like to use this pulley as it is not rusty as the one from the 350. Is this additional weight a v-6 only thing, can I leave it on, or should I remove it? Looks like a cold chisel could quickly take it off. Thanks, Greg