Casio CQ-1 LAP Button

[blackjetrock]

I've been having a wander around the PCBs of Casio's CQ-1 and would like someone with a CQ-1 to try something for me. It looks to me like the LAP and '=' keys are actually the same key electrically. It looks like they have the same scan and sense lines on the keypad PCB. can someone with a working CQ-1 (if such a thing exists, I have 3 and all are non-functional, otherwise I'd try this) see if the LAP key can be used as '=' when running the calculator, and '=' can be used as LAP when in stopwatch mode?

Thanks

Andrew