Uh, Carl, perhaps for the same reason you're considering chopping a hole in your fuel tank to fit an electric fuel gauge sender. I'm thinking you'll see more dual petcocks than senders.
No siree, you got the wrong guy, I'm innocent! And like I said, my tank has too many holes in it already. It's wirespokes and that
other guy that want to chop their tanks up!
And still, I maintain that putting in a second petcock is asking for trouble... like those people that water their grass. You know, once you water it, you pay for the water to start with, then the damn grass grows and you have to spend the time to cut it?? Why not just skip it all and go for a ride, or sidle up to the beverage dispensary!
