The builder had the truss manufacturer's "Strategic Sales Rep" (not the manufacturer's engineer) out to to have a look and he said no problem.

The only comment the engineer made was "I defer to the Truss rep's opinion" Turns out that where sets of floor trusses meet up perpindicular to each other, the tops of the flanges were not at the same heights (about 1/2 inch difference at the meeting point, second photo) Eric