I have used clear tape placing it on the screen so that the shards of glass will stay in one piece. This worked out for me hopefully someone will try it.

The square piece your are referring to is the rubber piece that fits on the logic board. It seats on the logic board between the orange circled screw and the green circled screw in step 13. To date, I had one fall off during my third IPhone 4 screen repair. Needles to say, I had to part the entire phone out due to one stripped screw in the corner that was holding on the bracket to the screen. Luckily the screen and LCD was already missing and all that was left was the backlight.

Referring to the exact screw that is circled in red, I cannot seem to get this particular screw to thread properly during the reassemble process. I have found that I had to add another 15-20 min to my assembly/dis-assembly due to the fact I have to remove the earphone jack and the antenna that is in this corner, too. Any suggestions on how to get this screw to thread w/o doing the extra steps? Need of help, Please

Is there a trick to get the corner screw by the headphone jack in the bezel w/o having to remove parts around it. I just cannot seem to get the screw to thread correctly

I am using the PH000 head that came with the 54 bit driver kit.