bang and olufeso cd50

Hello all
I have just got a b&o cd 50 and have now got it working found two faults that were not mentioned any where i could find on line.
1 the main cam wheel and the bottom cam have a locating key and groove so they lock in correct position to each other. I had one from a previous purchase that was beyond saving, and was ok the one on this unit had been either forced or the locating key had worn so the top and bottom cams would not stayed lined up.
2 There was no lubricant anywhere,and the optical carriage was seized giving the impression that it was not reading disc .
after changing cams and lubricating the carriage it now works will now cange Knackered caps as there are several reading way below what they should.
Hope this helps someone Cheers Nick