Thank you Wayne - I'll take you being jealous as a compliment!
Before I took the top assembly off, the whistle didn't work at all - zero steam or water. When I took it off for resealing it was plug by the previous owner's orange RTV and seal. That was a easy fix. Why some people use so much RTV is beyond me - it's like more has to be better!
It is pretty impressive how well the throttle & whistle screws work by controlling/shutting off steam. The whistle is actually quite loose easy to move - I though for sure it was going to leak but it doesn't. The throttle screw is a real PITA to move - it is crazy tight. It has worked a number on my finger because the "hub" got damaged/melted and now I have a messed up finger tip! I got to figure out how to get a "tire" on my hubs LOL!
My brother's No. 3 has what I call a "zebra stripe patina". Ugly as heck - I wouldn't think twice polishing it. He thinks it is some kind of coating for the brass and the "stripes" are brush strokes... which seems like a good hypothesis to me.