I have been led to believe that there is a "cover "or "gasket "which goes over the proximity sensor. I have spent several hours on line trying to source this gasket but I have found no source for it. My research indicates that the proximity sensor will not function properly without this gasket. My own iPhone 5 is missing this gasket and the proximity sensor has very little range. I am desperately looking for a source for this part.

No, actually concentric is exactly correct. When the center of the circle in the ribbon is exactly over the center of the connector on the board the respective circles of the connector halves are CONCENTRIC and properly aligned.

Months ago I wrote and placed an edit into step 10 which read something like this:

" Be very certain that the #6 connector half on the ribbon cable is perfectly concentric with the #6 connector half on the mother board before applying pressure. This may require a magnifying glass or jewelers' loupe. Failure to ensure proper alignment of these connector halves prior to applying pressure will destroy both connector halves."

At some point someone removed this much needed edit. WHY???????

I had edited this step months ago to add a warning to make VERY certain that the connector on the ribbon cable for #6 is centered on its mating connector on the motherboard before applying pressure to it. If it's not centered and you apply pressure you will very likely destroy both halves of the connector. The half attaced to the ribbon is replaced with the wifi antenna- very inexpensive. However, the half on the motherboard is tiny and soldered on. You'll need to get someone equipped to repair circuit boards.

When I ruined my #6 I ended up getting another phone. If you don't repair it, your phone will work but your wifi will not because #6 is the wifi connector.

Instruction here refers to routing the digitizer/LCD cables through the

"outer case". Just for the sake of clarity,

isn't the part through which the ribbons are

being routed the FRAME? If it really IS the outer case, where is the "inner case"?

Hope someone can ease my uncertainty: does the grounding finger for the

rear-facing camera go on TOP of the motherboard OR between the motherboard and

the standoff???

I wouldn't use Windex. It's mostly water. Why would anyone put water on a connection? Use isopropyl alcohol and be certain that it's at least 95% alcohol.

Better yet use contact cleaner or the original Brakleen (in the RED can). You can find the Brakleen at any automotive store.

When re-installing the mother board ensure that all of the previoulsly diconnected connector cables are out of the way and do not become trapped by the motherboard.