Thanks again to stasys
for his advice.
Never mind this fancy glue I used decorators masking tape to stick the screen to the frame. Some of the wide stuff doubled over back on itself with the "join" on the frame - not overlapped so it won't give a ridge. 3 vertical strips so that it covers most of the frame, then carefully centre the screen. It's a good idea to take a picture before you remove the old screen rom the frame, unless you have another faulty one to hand, like I had.
I guess I'll use it for a bit now
, before looking at upgrading the firmware.
After all i've got that $20 to spend I won in the mobile read competition - beginners luck!