Gabe, I am not claiming anything, but I am starting to think you
may have regular musa cheesmani seeds and not musa nagensium.
http://www.users.globalnet.co.uk/~drc/mcheesmani.htm
This description of musa cheesmani matches the picture you posted.
http://www.users.globalnet.co.uk/~drc/mnagensium.htm
The description of musa nagensium says the seeds are almost half an inch!
What do you think?
Erlend