The latch is key, and you've got much more detail than I did! Well done! My soldering was painful, the worst forme was no flux (paste). The ony; available is a powder you mix with water, which pops and jimps as hard scab-like bits. I am used to greasey pastes, mighjt look at this japanese koki stuff. I would liek to condense your info into "soldering hints and post on the AMP website as Reference. You've done very, very well.