everything worked out, mostly by using <20% throttle past the sound booth in 6th gear.
i ended up hacking together some inserts, essentially sheet metal cones w/ holes in them. who knows if they worked.
first session i did a sound check. the first 2 laps were fine with <30% throttle, final lap at WOT was 97db :laughing. so i cruised that little straight in 6th every single lap. it rly didnt matter since i was just messing around and being a hooligan w/ friends all day. B+ w/ a bunch of fast friends on little bikes is hilarious fun.
halfway through the day, one of my inserts started to crack and blow out. i removed it for safety reasons and reduced my rpms a little bit there. the bike gained some power back so maybe i actually went faster after that.