Well, the sight glass fittings had brass screws soldered in when I got my first B31, which I took them out. Today I got some 1/4 stainless steel bolts to plug them up, until I could some up with donor sight glass fittings. Lucky me the top 1/4 female is stripped. I figured I couldn't make that worse, so I used a donor tank's female fitting (it had been dropped hard and the fitting I needed was already 1/3 out from the tank). I would not call it nicely done but it has been transferred and should hold pressure. Heck, I am not even going to share a photo, cause its fugly LOL
I'll have to "borrow" the side flat head screw and a whistle top from my spare B30 once the heater comes in from China. If this thing makes steam and runs, I'd call that a success! If not, I've had fun trying :-)