Keyboard four, part two
I tested the silver paste repairs, and all three of them worked. This silver paste is much more conductive than the graphite, and it comes with a hypodermic needle, so you can make very fine and accurate lines with it. And a little goes a long way; I got 0.3 ml and I haven't even used half of one ml.
The keycaps are all dry and ready to be reinstalled.