New focus 1.8 cam belt not running true
I have just replaced the cam belt and it is not running true it is hanging over tensionern by about 2/3mm and the bearing sounds as if it is about tosieze up.l used a new dayco kit and it was buzzing after I installed it so took it out and reinstalled it again and it quietened down but is know running off centre towards the front by about 2/3mm and is noisy what's happened and is it safe to use