As if the V11 hasn't been enough trouble, I've recently started noticing the Quota's top gear is whining under load at certain speeds. 40-55mph is loudish and there's a distinct piercing peak at 65mph, but the noise almost completely disappears at other speeds and the other gears are pretty quiet. Now, 5th's whined for as long as I can remember, but I rode the bike withoput earplugs for the first time in ages recently and it really was loud. I have a horrible suspicion it coincides with the tranny oil leak increasing and the gearbox oil level being abnormally low when I checked it last service. So, the answer I'm looking for is: " they all do that, Sir". I suspect I'm not going to hear it, though. Note that apparently lightqweight-engined bikes use a similar gearbox but with straight-cut gears, so some of these models are known to be a bit noisy. The Quota's basically a 1000S motor in a tall chassis.