Damn - it would seem I hit a nerve - good.
If you'd have been paying attention, you'd have read I'm all for the line crew making a higher wage than overhaul as well as understanding the need for geo pay (which was voted away by our "representation").
The last I heard, democracy is a system that allows one vote per person and the group with the most votes wins. That is why this country's Founders instituted the Senate so as to help eliminate the "Tyranny of the Majority" they recognized could happen with a straight democracy, exactly as you rightfully complain about here.
I'm not sure exactly what you feel an overhaul mechanic would be worth or, for that matter, a Tool & Die Maker with nearly 40 years in trade as I am. You'll have to get back with us on that.
The unfortunate thing about your argument is with the democracy everyone says they want (including you), the $50 per hour for line just won't happen, like it or not as you and the others will be, unfortunately, caught up in the tyranny of the majority and I don't see the TWU adding a senate-type component to the voting procedures now in place.
Perhaps you'd be good enough to tell us what procedure(s) would be suitable to you re: negotiations to assist in getting what you demand.