I'm thinking of having the bottle stack sent out for restoration. It looks pretty complicated to disassemble.
The stack is not as bad as it looks. A lot of the same parts that go back together the same way over and over. If you have a place to get the parts re-plated, I think it is the most gratifying part of the restoration. So many of the parts get outsourced ie body work, paint, coin mech, that there is not a lot left to do yourself. There are lots of pics and advice here on how to redo the stack. You can research past posts and pretty much get a walkthrough on how to do it. If you feel comfortable taking it on, its a lot more satisfying to put it back together piece by piece than to just bolt it back in as a whole unit that someone else restored.