Disassemble a KC - please help!

[DSVO]

I?ve come at the end of disassembling it, except the guys who designed this synth did everything in their power to ensure no one else than themselves could disassemble it. But the last obstacle (so far) is the right side of the synth. The whole top panel is loose and ready to go off, but it stops at the right side, at the key all the way to the right. It seems like something meaningless metal is screwed into the right ?wood? panel, inside, so you simply can?t take it off.

Have anyone disassembled a KB/KC before and has some nice tips?

Thanks in advance!