alright, well - that wraps things up nicely. thanks for all your help.
i figured this out on my own, it seems the 2 guides on the sides of the pocket were slightly deformed and would not permit the pocket to seat properly, some careful adjustment was all that was needed.
for posterity's sake, in the attached manual page, the procedure shows the wedge tool inserted below the pocket, i am pretty sure, at least in my 2015 coupe, that the wedge should go in the top to release it, and it should tilt forward, like an oven door, and then lift out.