Found this on a ZZR600 forum. Confirms what you felt. Lower the forks in the triple clamps or have it done asap.
I have pretty good eyes for an old fart!

"As for geometry, I've said it recently in about 5 threads now, but i'll say it again in this one anyway I have my fork tubes raised 8mm in my tripple clamps... Doing this mod lowers the front end (same effect as raising the rear) and makes the bike more flickable and it falls into the turns better... but it does so at the cost of stability. 5-7mm is plenty for the novice street/trackday rider. Any more than that and you'll be flirting w/ tankslappers."
http://www.sportbikes.net/forums/zzr-600/327034-zzr600-suspension-setup-2.html