The bark is lessening (540 miles), and the howler monkeys seem to be quieting down. The howling sounds like it's in front of me but I'm not sure and my assumption borne out of research is that it's actually the bevel box. It's only present under acceleration, vanishing under even throttle, or decel. Seems to be vanishing. The manual says to expect bevel box noise for about 1,000 miles so I'm optimistic. It's been a very minor annoyance in an otherwise perfect few weeks of daily morgasms!
