Its a lot of material to remove from the disc and i dont have much confidence in the manfacturer process especilly when considered the other disc has no groove so one would like to assume it was made perfectly balanced but has been through the balancing test and did not need balancing in that expensive machine. Then in my mind as a former production manager it leads to a question of quality and process if two discs from the same production process have such a difference. I am going to drive Nigel tho regardless and we are going to stop when we need to right where need to.
