I love my 20 gallon SS kettle (from instawares) too.
I agonized for weeks before using a step drill bit to put a hole in it and install a weld-less spigot.
Glad I did, though, it is so much easier to just open and drain the wort that way.
I noticed that you put thermometers on the lids. How's that working for you? How long is the thermometer probe?
I was thinking about putting weld-less thermometers (2 inch probes) on the kettle wall just above the spigot.