Any information or comments. I was at an estate sale a few weeks ago where everything had to go. At the last hour I bought a Sony TC-353D reel to reel that was still brand new in the box and had never been opened or unpacked. Date on the box is Feb. 2 1972. This machine had never seen the light of day. I bought it for $30.00. I brought it home, set it up and checked everything out. It plays and records great for awhile. Then the speed seems to slow down. I re-oiled the gears thinking everything maybe dried up. Again It works fine for a while but still slows down after a period of time. Even the fast forward and rewind mode is slow. Maybe the motor bearings are dry too I don't know. Any thoughts?