base timing keeps advancing by itself...

Yeah that info would help. Just weird two doing the same thing so kind of getting away from the distrib but not much else but the ballast if he put it back in. Like the slipped balancer but it seems the timing is actually moving. Weird one he can send it to me again he knows I got he rides and will beat the hell out of it hot and cold to confirm or eliminate the distributor. Not thinking really anythin else. if there is no othe box in the system. Was a points distrib converte to a Petronix I they usually just fail and wont work if they go bad. Never heard this one before. And also turned it back twice so that all adds up on the position of the distributor related to say the oil pump drive off of the cam. Not much inside a distributor that can physiclally change like that. Really a weird one here Guys.