Good looking frame, its similar to my "Beer Bike", I like it, and you got a tank, springer, and a 2 speed, COOL. AND you got a brother that works in a metal shop so if he can't get that broken stem out, tell him to just chop it off below the broken stem leaving enough tube to sleve it a bit and weld a new piece on it ( be sure the sleve allows room for the new stem) and spin some new threads, isn't that what brothers who work in metal shops are good for, wish I had one.
Oh yea, as far as the chain guard goes, rat bikes don't need no chain guard, a little grease on the pant leg shows your a rat bike rider, and thats a good thing. my2cents.
Looking forward to seeing Krusty Kruiser done.
Dangerous Dan