Coming along.  Gave it a bath and scrubbed it with baking soda, hopefully neutralized the acid.  The solder pads are completely missing for D1.    I can see where the traces are for the top and left pad, but not the right pad.  Not sure how I'm going to fix that.  Resoldered all those tiny chips, too.  Acid got into the ROM SIMM socket, so I'm going to have to replace it.  I'm hoping the PDS slot is clean.  Can't tell... I just don't want to replace it. :-/