alph2z,
Thanks a lot for the effort.
How excatly did you derive and plot the data?
I think you neglected to add the 1G earth gravitation to your values. Airframe load factors are based on total load, so unaccelerated level flight has a normal G-load of 1. Not 0. (Beginning of Stall should also be 1, not 0, otherwise they would have been weightless ...).
So towards the end, total load factor was 2.5G, which is consistent with trying to pull up as hard as possible.
Bernd