FWIW about 6 years ago i took over a failed 8 bay and tunnel.
Among the various issues were that it had 2
Hamilton Changers only one of which was working and that only took $1.00 Bills.
It was my only foray inot the SS business but I figured the
changers were critical and among the first order of business was to get them both working to take $1.00 to $20.00.
I was not in a position to let an employee have keys to the
changer. I soon realized that even though it was not a high volume location If one
changer jammed the other one could get drained pretty quickly crippling the revenue stream. I also could not always run over there at a moments notice. The simplest solution was to add a third
changer. You may want to consider adding another.