Well, the first white Filco reds I bought on taobao had a problem. The 1 key got stuck. I wasn't going to send it back to my taobaobee agent and ask for an exchange from the taobao seller. So what would a geekhacker do? Open it up, of course.
I opened up the keyboard (thanks for your open Filco mod post, ripster!), de-soldered the 1 key switch, opened the switch up , made the stem go up and down with its top removed (oooh, sounds erotic!), put it back together, soldered it back onto the board, and it is working again.
While I had it opened, I took a few pictures of the keyboard's motherboard. enjoy.