I just finished building my Eros tape preamplifier and the first time I played my recently restored and upgraded MX5050 everything sounded like it was working fine except for the tape rubbing against a bent take up reel. I replaced the take up reel and now I cannot get the tape player to run at normal playback speed. The display says it is set on 15 ips. When I hit the play button it takes off at fast forward speed. Has anyone ever seen a problem like this? Am I missing a switch somewhere? Could I have blown a fuse?