I have an absolutely immaculate Kirby Ultimate G Diamond Edition and the transmission is a little bit noisy when it is off and in neutral. I am thinking of just replacing the transmission because I know where I can get them brand new and cheap. My only question is that if I buy a new transmission, will I have to change out the gear that the belt goes on? I know that the earlier Kirby's used a different gear ratio so I don't know which ratio the Diamond Edition has. I'm hoping it's just a simple matter of swap wheels, swap the TechDrive pedal and just put it in the machine with nothing else to do.