[DMcMahon]

After re-assembling everything, the Supply reel table clutch is now working well, can hear the fairly loud click as the energised solenoid lifts the clutching disk (the disk now being no longer stuck in the decomposed rubber post cleaning) and can feel that the upper hub is being locked to the lower hub.

The lock is quite strong but if I pull the upper hub fairly hard upwards I can overcome the lock, i.e, can lift the upper hub but I think this is probably normal.

A slight problem at the moment with the Take Up reel table (the one with no wires to the solenoid coil) in that after securing it back to the chassis it is too tight to turn manually, trying to get the first/upper nut position correct. Need to fix this before I can test the tape transport operation again post fixing the Supply table clutch fix.

Just found my head demagnetiser so later will be able to try it to see if the playback heads detect it.