NSM ES 160 mechanism help!

Hello all,

I have recently acquired an NSM Festival jukebox, I think it is an
ES 160 mechanism.

After cleaning and lubricating the mechanism, I have it running
quite smoothly, but there is still a problem with the mech. Once in a
while, the mechanism motor seems to stop too early while loading
a record. It begins playing OK, but when it gets near the end, it jams
because the tonearm isn't able to move freely towards the end of
record. If I rotate the mechanism motor manually a bit, the lever
controlling the tonearm lifts out of its way and everything's OK.

I have tried adjusting the mechanism microswitch, and even replaced
it, but no success. The machine might play 10 records OK, but then the
problem appears again.

Another question: How do I set it on free play? The manual tells to set
adjustment C3 to 000 00 and then turn key switch on. I have done that
and shorted the keyswitch terminals at the connector but no success.

My manual is for the ES II mechanism/software and I seem to have
older version because my juke does not have the Cr adjustment for
random play. Does my machine have a freeplay setting at all?

Thanks in advance for any help!

Tuukka