I've been getting a ton of hum from my Ric, and it's been annoying. Sometimes it hums, sometimes it's quiet. Yet, hummage is usually present. Is there any way to get rid of it without a pickup change? I heard the Tech21 Sansamp RBI Rackmount (that I recently ordered) can stop it, but I'm not sure if that's fact or fiction. Is there any little trick that can the darn hum?