Get the two at the same speed using the pitch fader as you would when working on normal decks then there should be a pitch ben button that allows you to tweak them until they are in time.

It works the same way as speeding up the record or slowing it down with your hand….i.e if you press the + then it speeds it up slightly until you let it go.

This may seem fairly obvious but its the only thing I can think of…..I flipped out and threw my cd decks at the wall a few years ago and haven’t had any since.