It's been a while I bought the focusingscreen. I've had it working perfectly fine but then other times being really off and it's only today I realized that the bottom half would allow me to nail the focus while the upper half would not.
I've been trying and trying tonight and can't get any better results. I'd be happy now if I could get same results as before I starting messing around.
I even tried using the stock screen and focusing is uber bad:
Upper left corner: front focus
Lower left cover: nailed it, or maybe slight front focus
Lower right corner: front focus
Upper right corner: severe front focus
Seems I might have bent the tray and have tried to straighten it up again. Its a mess now :/
---------- Post added 03-09-14 at 20:02 ----------
gmiyamoto: I received 5. 3 look alike and the forth is orange while the 5th is made of metal. They are all identical in shape and all of the white/transparent ones seem to be with same thickness.