Saab 900 radio problem

Had my Saab for 2 years now and I always had an issue with cassette player. It will 'eat' cassette, but after very short attempt to play it, it will give me a message about ejecting, and that's it. Cassette is stuck, no playback, no ejection. I've already took it apart, cleaned it, put a bit of grease, even swapped just the mechanism, still no luck. Maybe someone here have any idea what else can be done? And before you ask, no, i'm not giving up on that.