You have three Tascam m2600 mk ii?
I would sell all three for a much as you could get and pick up a soundcraft 600 and have Jim williams mods the mmaster section and as many channels
as you can aford.
Not so sure studer made a 1/2" 8 TRACK BUT THERE 1" IS KILLER.
I Always like the tascam 1'2" 80-8 8track recorder a real work hourse thats a lot easyer to fix than a Studer, and way cheaper to buy.
But it is a good time to pick up good recoding gear for cheap..