Two problems- When trying to fast forward my reel to reel tape it slows to the point where I can't get it onto a single reel. I also get a squealing noise when tape is allowed to run thru the tape guide. when holding the tape away from the guide for instance with a fingernail,the noise stops. All guides and heads have been cleaned. I believe all have been demagnetized in the past as well. Any suggestions? Thanks , Mac