I replaced one foot of the air hose today. Which really does not fix my overall problem.
Today, Greg showed me how to trouble shoot spot free rinse. The spot free rinse worked in every bay except one. The First, we checked the rotary switch with a voltmeter looking for 24 volts. Next we checked the voltage in the spot free unit.
When we checked the terminal strip no voltage which told us that something was wrong with the line. Greg started to inspect the coin meter closer and noticed a wire was off (red). So Greg saved the day again.