I am having a problem with playback, after the play button is depressed.It would slow almost immediately.Then I did the following checks and maintenance, I cleaned the tape path thourghly,adjusted the pinch roller pressure,and checked the brake pressure(which was fine),now the tape will play about halfway thru a tape,then begin to slow.Could it be that I need a new pinch roller? I just acquired this deck,and it has been sitting for some years unused.Any help will be appreciated.