Hey, Dean! Great to see you back!
I was wondering, what is the damper setup? I've had a few 1k's, and an '06 10R, and I always thought they were jittery.
I had a few spirited head shakes at Maxton, over those bumps, for sure....even on big bikes. I think that's when I just decided to always crank the damper up to near max, lol. I'm not sure if you are using a front strap, but I also found that less suspension compliance is never good. And, of course, it is usually something simple causing the issue, right? I never like to make too many changes at once.
Anyway, I am nobody to really give you advice; most of all, nice to see you running again. Be safe, and best of luck with your new projects!
Shane