[Norbert Schuchbauer]

There may be a small difference in production numbers. I have the following:
B-1 61
B-2 165
B-2/U2 48
B-2/U4 111
B-3 35

This will add up to 324 B-2 and in the book by Petrick he lists 319.

I guess anything is possible.

Regards,

Norbert