You are most likely just finding the calibration limits of the stability control system. That said, I have found the nanny to be more sensitive on some units than others. Even my two identical 2008s were slightly different, so there indeed is something to be said for sensitivity differences. One of my 2008s would kick in the nanny quite a bit earlier than the other, consistently. After 30,000+ miles of switching back and forth on each, you knew there was a difference between the two.
It would be helpful for you to ride a different (ideally same year and model) unit to see how they compare. Not sure if there are any calibration changes such as sensor sensitivity that are even available, but I believe it is possible your unit might be kicking in the nanny sooner than say another unit. But you say you are a snowmobiler, then you should be familiar with inside ski lift. The Spyder really frowns upon this behavior, so leaning towards the inside ski (wheel) keeps the sensors from getting out of whack. When the nanny senses inside wheel lift, it stutters momentarily to keep the wheels on the ground. Turning hard and applying throttle with little leaning into the corner are a sure-fire formula to get it to kick in. You have to a) get out of the throttle, b) turn less abruptly, c) lean into the corner more. A sway bar and/or different shocks will both help reduce the amount of body roll and delay the nanny, to a degree, but then the unit can simply lift (later) instead of inducing a slower body roll. It is all a compromise.
I've said it before, but having driven prototype Spyders way back before they had stability control, when they would lift the inside front tire you were on a literal tetter-totter and it took a good rider to keep everything in check. This is a natural behavior for a snowmobiler, but the non-snowmobilers found this very startling. The nanny is set the way it is for a very good reason - to keep us safe and in control. Sure we might like to try it with it off, but then there would be a bunch of us crashing our brains out. We don't want any of that! :shocked: