Help needed with gamebird auto fount waterer

[Nksg75]

I am having a hard time figuring out this new waterer. I see many threads that suggest replacing the valve. Ok, great, but how?
I have searched utube, and all I can find are the videos from different hatcheries showing how to set it up.
I can obviously hook it up to a garden hose and have it suspended, but where are the cliff notes on makeing it actually work?
I am a visual learner. If someone could point me in the right direction I would appreciate it.
Here is what I have:

I am having the overflowing problem with it. Yes I have fiddled with the levels, only to result in the same problem.
I am heading to store today to purchase this new valve that seems to be a common problem with this waterer.

And the tool to install it:

My question is how do I do it?
What part of the tool above do I use and where do I use it?

I can't find any videos on how this is done.
Also if you look at this pic below, could you tell me how this replacement valve would fit?

Thanks for any help!!

 

[Rickba]

Take it to the feed store that sells 'em. They'll fix it for you.

 

[Nksg75]

I ordered it through amazon. That's ok, just to give an update I went to auto zone, bought the items above. Then I decided to take a lunch break from all my hard work!(ha!)
I was in Whataburger, had all the parts out trying to figure it out.
I heard laughing from a nearby table, and looked to see a older gentleman laughing at me.
I asked him if he was laughing at my confused look. He smiled, nodded his head. I said "do you know how this works?"
He of course said yes.
Then he did it for me!!
Yea!!