The switch for the right sling in my ACDC stopped working. All common drive and return switches in the switch matrix work as well as the coil when tested. I do not see and obvious bad connections at the solder points. Tried cleaning the contacts with a business card to no avail, and my DMM is out of batteries (need to pick some up, wanted to get this question out to the geniuses first). Do these switches fail frequently? Is there something dumb I'm not doing? If it needs to be replaced, how bad is it to do? I'm a noob and want to learn. Thanks all