Just a quick correction, Paragon does say that the BlueBird XL needs a 20 amp circuit,. For some reason they put a standard plug on them which is not correct acording to NEC.
Next time I am home, I might run over and ask them what's up with that since they know me fairly well there from the number of kilns we have purchased from them. That way I can check out the scratch and dent area and see if I can get another Bluebird XL cheap since I love that kiln.