Does anyone have any suggestions for a converter? I know they aren't necessary, but I just had a scare with my PCE Duo-r and while testing, found the 9v adapter is putting out 13.4v in my house (usually around 118-120v). I don't want to dish out another $200 for a new duo or $120 for a new Saturn. I'd rather just buy a $20 step down to be safe.