[nmiddlemass]

Hi..

I am hoping someone may be able to help me.

I've replaced the shot belts on this Sanyo Betacord 5400P, the good news is the loading belt now works really well and the machine laces up when a tape is inserted.
I have lubricated the unit and given it a good clean, lots of old belt debris.

The mechanism now functions when play and fast forward are pressed but when I press rewind the unit starts rewinding and then jars to a halt. If I manually move the gear turning the counter rewind functions perfectly.

When a tape is inserted it tries to rewind but again, it stops.

Am I missing something obvious??
Any advice would be appreciated.
Thanks in advance.

Neil