Yamaha CS80

All right, my CS-80 now runs (I used a ready-made autotransformer - didn't 
build anything myself).

It's remarkably well in tune, considering the voyage around the world, but 
of course I still have to tune it to really enjoy it.

Apparently it's not just the M boards that need tuning, though.

So, stupid question: How do I get to the boards below the keybed?
I see the two screws on the bottom, fine.
But do I have to remove the left and right end blocks before I can lift the 
keybed?

And do I have to put the card cage down to normal position, or can it stay 
up in service position, for lifting the keybed?

JH.