There certainly are, yes.
NISTs analysis is based on an inaccurate representation of the structural drawings, for example drawing '9114' which clearly show stiffener plates on the girder. The analysis that we have done and the conclusions we have reached are based on the structural drawings for the building that NIST say they used.
Yes, we have demonstrated that clearly. The plates allow for greater transfer of load across the bottom flange of the girder. Given that the maximum expansion of the beams to the east of it is 5.5", and the seat plate is actually 12" and not 11" as stated by NIST, the improbable becomes the impossible, in terms of the ability of thermal expansion of the long span floor beams to puh the girder off it's seat.
Yes. If NISTs supposed initiating event is not valid, then the cause of the buildings failure is not as they described it in the report.
We are dealing with the initiating event here, and that has been invalidated. As puzzling as the admitted 108ft of freefall acceleration exhibited in the collapse is, we must deal with what caused the building to begin to collapse in order to understand the cause and learn more about how to prevent this type of failure recurring.