[A/S] Pedigree info...???

["alabmwstretch <alabmwstretch@xxxxxxxxx>" <alabmwstretch@xxxxxxxxx>]

Howdy folks,
I recently bought a 31 foot sovereign. I am hoping someone will help 
me with further information about it. The serial number is I 31 B 3 J 
2751
I realize the signifigance of parts of the number, I for internaional 
trim, 31 for 31 footer, J for having been made in Ohio... I am 
needing help with the signifigance of the "B" and the "3". I know I 
am picking nits here but please realize this is only a point of 
curiosity. I obviously know its a rear bedroom queen model, is this 
the meaning of the "B"? What then of the "3"?
Thanks for any help.
Peace on Earth, NOW!
Stretch Hendrix