Vivian Campbell does not want to do a Dio tribute but not because him and Dio had a hard time getting along. He basically says he is just to busy with Def Leppard and also playing with Thin Lizzy. He does not want to commit to something that should be done great. He also said that no one will even come close to singing like Ronnie James Dio so its not a good Idea.  For more on the story go to www.rock