Quite fumbling

I have the GGS Screen Protector for my Nikon D7100 and my Sony RX ordered 100III after I attached it to my Nikon D300s some time ago successfully.
When D300s on the edge of the glass, an adhesive strip was attached, which keeps very well and read position itself without problems.
In the new version, there is no longer this tape, but the whole back of the glass is provided with a self-adhesive adhesive surface - and there the problems begin !!
If the glass is not properly positioned on the fraction of a millimeter, it is not completely flat on the display and it was probably nothing with "self-adhesion as if by magic" - ie there where the glass is not exactly resting it does not suck at even and you has an air bubble. The same thing happens around the smallest speck of dust.
I say in my D7100 2 trials and in RX100III and write 3 tests used to the glass as was on display that could suck in bubbles.
When pulling back the glass every time I have sweated blood and water, that I do not come to the adhesive surface, dust it or bring it falls down, which would have meant a total loss! (Carpet hair, fingerprints, etc.).
Now after the glasses are finally on two cameras on it I am very satisfied (not to say enthusiastic).
But honestly: I mourn the much more straightforward tape at the edge to !!!
Still, I can recommend this product (films are for me no alternative) - you just need good nerves!