OK.

1. To post the pics, you have to 'right-click' the enlarged image on Imgur and then capture the "image link", which looks like this: https://i.imgur.com/AjJeaqp.jpg
I did an admin edit of your post to verify that it works under your user privileges.

2. I don't see anything in the pictures that suggests a leak there, so . . .

3. You need to leak test BEFORE you dig into the skimmer. These links are relevant:

+ http://youtu.be/Y90c7pYMgPc
+ http://www.poolforum.com/pf2/showthread.php/10295
+ http://www.poolforum.com/pf2/showthread.php/10295

You'll need to overfill your pool AND then turn off your pump, so you can test the full perimeter of relevant points AND stop pool currents that would flush the dye away.

Good luck.
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