I ended up calling customer service and they were terrific. The technical team was sympathetic to the switch problem and sent me a replacement. The new switch was upgraded to a smooth barrel (eliminating the need for an external nut). The smooth barrel is a perfect fit to the case hole and will not “pull” on the solder joints, nor be as susceptible to damage during operation. They treated me very kindly – I was totally impressed and appreciative.
I de-soldered / removed the old switch, and installed the new one. Took about 1/2 hour. I totally forgot to test the switch and see which type it was… If you still need to know – go ahead and remove the switch; hopefully you can test it out of the board (even though it is defective). You will need to remove it anyway…
A few words of caution – removing the circuit assembly is tricky, just be careful not to break the 9v power jack. Also, be very careful not to allow heat or solder to migrate onto nearby traces – there is a chip resistor nearby who’s solder joints will soften if you are not careful. Be very precise and stay directly on the switch pins as you remove / install solder. You will be good as new. Good luck!