feels

hi all, I'm new to all this so please be patient with me, when travelling at speeds your mother would cringe at, my bike feels very light and the handle bars have got this slightest shake on them, I'm in top gear yes I'm going full chat this happens anything over 115mph where law permits...

I have an 02 mille with akra ti and ti evo 2 chip. Not sure if the airbox has been modded. I'm new to these bikes but to me it feels a bit lean around the midrange. Pulls hard but there's a lot of rough vibes around the 5-6k range. Especially with fast roll-ons. So how might I smooth it out...

Went on a ride out last sunday and we went down a REAL uneven bumpy road, NOT pot holes just really uneven Since then the front end feels funny/light sort of as it dont seem to want to turn in as quick.....Mates zx6r feels the same to he told me today since that ride out What the Fook is going...