if feel with you.
that reminds me once when i got my bernie rico, its seems to me that that it was locked, and after a few days of trying and stuff and a few calls, he described me how to open the latch exactlly
just simple move the whole latch onto the left side,
penggg, it was open
WUOAHHAA, how embarresing to me
but i have never seen this kind of latch before, so.. :)
so the trick was to move the whole latch, and not some part of it, compared to my other guitar latches