Sony TC135SD & Pioneer CT-4141A Vintage Cassette Decks

Two vintage cassette decks being sold for spares or repair.  Both units power on, the pioneer sounds awful even after cleaning the heads (distorted etc) and also has a slider missing.  The sony plays, but the play button is stiff and the rewind goes the wrong way.  Probably easy fixes for the right person or great for parts.  Strictly no returns on these units as they are currently not working.