hi Dan,
I have seen a few ATM units, but they were all the dockstackers. All used standardized controls. I would suggest giving Liftway a call on a whim to see if they have anything left. They were definitely the dealer for them in the 80s. You are correct, this was not a big company and only a few were produced, however there is nothing special about them. They were only a collection of parts from various manufacturers, and any weldments specific to these machines can be duplicated readily by a competent machine shop. The only problem you will run into is with the capacity plate; IF this info is LOST you will need to hire an independent engineer to define the operational limits of the machine and certify the design before an alternate capacity plate can be affixed in order to pass the mast inspection. The engineer's certificate with seal will also have to be kept at the workplace at all times and a backup copy should also be kept on the machine.