dubelg.....I think I'm right in saying you've bought Tonio's 620ss. If so, I rode his bike for 1 session at TA5 (Brands) & I'd be very surprised if it had standard grade oil in there. It dived a bit (possibly a little bit too much?) when you hit the brakes (which were surprisingly good), but then settled quite nicely.
Speaking to Tonio on the day, I thought Geoff Spencer had given him some advice as to which grade oil/ air gap to try for next year
. Whatever it has in there now though, that bike can definitely run at the sharp end even if you left it as it is. I'm not a racer, but even I was doing 57 secs laps without really pushing (as it was a few days before Tonio's last DD round).
If you didn't buy Tonio's bike, just ignore me
