After the primer was dried, I decided to fit the floors in place. Once they were moved into position, I tested the screws in numerous places and it all went together without a hitch!
I was a little worried about lining up the hinge in the rear seat due to the three seperate pieces that were cut to accomodate the removeable floors, but it all went together and works as it should, as does the front seat back.
With the floors in and out, I'll have to touch up a number of areas of the first coat of interior paint I put in...I should have waited until this was done.