I just put a new tire on my 450r and now I can't turn without the back end trying to swing past me. I used to have a 110 rear tire and now I got a 120 geomax and now it kicks out in every turn. I don't know much about suspension so I was looking for some pointers. The track I was on was sandy and it was fine going in but as I rolled more on the throttle shooting out of the turns it would just kick out. My buddy said I should soften up the rear some more since I am getting more grip. Is this the right direction?