Drive belt on Kickr Core V1 coming off drive pulley

Hi all, I recently had occasion to fit a new drive belt onto my almost seven year old Kickr Core V1. My Core was making strange grating noises in a while and when I eventually went to investigate I discovered that the old drive belt was fraying at the edges and that it was half way off the pulley. I cleaned out the debris and ordered a new belt. I spun the pulley with no belt on and there does not appear to be any wear or noises coming from there. I proceeded to fit the new belt but for the life of me I cannot get it to stay true on the drive pulley. I’ve tried several different tension positions but regardless, after a few spins the belt is coming off. Any help with this issue is appreciated.