I apologize in advance if this would be better in the DIY forum, but I've got to think there are a lot of you out there who've "been there, done that." My TT is a Perpetuum Ebner 2020, and I'm trying to solder the tonearm leads to the metal tabs that the RCA output cables are soldered to. This is all part of a muting switch. The problem is that I've soldered all eight wires--signal and ground for left and right for both tonearm wire and output cables--TWICE, and each time I only get sound out of the right channel. Actually, the second time the sound was fainter. So assuming for a moment that the muting switch is ok, what could I be doing wrong with the soldering? Too much solder? The wrong type? I believe it's regular rosin core. I can't see any stray strands that could be grounding things out. The green arrow in this photo shows that's there clearance between the contacts and the ground in the "play" position, so this should mean that the muting isn't the problem.