Hey guys, I was playing some this evening, and when I plugged in my reverb/vibrato footswitch, there was kind of a loud "pop" sound. Could have sworn it sounded less bright afterwards, but maybe it was just me. I was looking at the cable, and as I moved it around while plugged it (moving the TS connector around inside the FS jack) it would make that same pop sound. Now I had unscrewed the reverb switch, as I never ever turn that off. I screwed it back on, and didnt get any of the same sounds. Any ideas? Maybe cause the reverb switch was loose in the footplate? Amp info: Newer Fender DRRI, with replaced caps, output trans. and speaker, as well as a variable negative feedback control. Not sure if this would make much of a difference, but thought it best to include. Amp was serviced at time of mods/upgrades just a few months ago.