Regarding the question in post #24,
“Have any of you seen or heard about this issue with the times being wildly off and, in some cases, just wouldn't turn off?”
Yes. That perfectly describes the behavior of an ailing Chromegatrol. The switch has nothing to do with the timing problem.
Chromegatrols become unreliable as the components age. The timing is controlled by the constant charge/discharge rate of the 5 timing capacitors: C1, C2, C3, C4, and C5.
The large C6 Capacitor (in the aluminum can) is connected to a solenoid wound about the transformer core. It’s part of the voltage stabilizing tank circuit and has nothing to do with timing. It almost never needs replacing.
Referring to the schematic, C1 and C2 are electrolytic capacitors. These are liable to go bad as they age (changes to the electrolyte). You can test a capacitor with a multimeter. Unfortunately, capacitors must be unsoldered from the circuit to test them. I’d pay particular attention to C2. It’s a 300μF 50 VDC electrolytic capacitor.
If you’ve removed a capacitor from the circuit to test it, you might as well replace it with a new one. Electrolytic capacitors have a polarization that is marked on the body. That polarity must be maintained when you replace it. You can see this in the schematic. Note the + sign adjacent to the C1 and C2 capacitor designations on the schematic. Capacitors C3, C4, C5, and C6 are unpolarized.
Of course, there are other components that might have become defective: resistors, capacitors, diodes, and the LM322M timer IC (available on eBay).
https://www.ebay.com/sch/i.html?_nkw=LM322M+timer+IC+&_sacat=0&_from=R40&_trksid=p4624852.m570.l1313
To avoid the potential problems with an aging Chromegatrol, instead try to find the Standard Power Supply 412-021. It’s simply a 120-volt to 22.5V step-down transformer. These are simple and rarely give trouble. The ON-OFF switch is the only moving part. You can use the Standard Power Supply with any timer with at least a 400-watt capacity.
http://store.khbphotografix.com/120V-Power-Supply-for-Super-Chromega-D-and-E-Colorheads.html
If you’re patient, you can find one used at a reasonable price on eBay. The Solid-State Voltage Stabilizer 404-841, or a line stabilizer, is needed for color printing. It’s unnecessary for B&W printing.
http://store.khbphotografix.com/Voltage-Stabilizer-for-Chromega-D-and-E-Dichroic-Enlargers.html