recently developed a "whirring" sound from the tach - it's intermittent-ish, but generally becomes audible around 3K RPMs and then increases in pitch until i shift. i removed and lubed the tach cable and speedo cable, but it still does it from time to time. i have the cables routed as i always have, with the tightest "bend" at around a 5" radius.
just wondering if maybe it's something inside the tach itself that needs to be lubed -- i was hesitant to spray anything into the gauge itself.