My DCD 1520 just started to have a hard time reading cds. Once it gets the cd read it plays fine, but sometimes I have to reload the cd a couple times to get it to play. This just started happening in the last couple days. Is there an adjustment for the laser or could it be something else? It's an old deck, so I'm aware it could just be on the conveyor heading to the vintage hifi scrapyard. Any ideas are appreciated.