I've got a King Duo Gravis in my herd whose crook is mangled beyond possible repair. Anyone have a King/Benge bass slide crook on hand? Bonus points if it's silver plated or made out of nickel, but other alloys/finishes can also work. If such a crook cannot be procured, I could probably retrofit a different crook, like a Bach. The outer diameter of the ends of the crook are approximately 0.635" with 3.15" between the slide tubes (wiggle room available for slightly wider or narrower crook).

Let me know whatcha got!