Pool Problem, can you help?

Our pool is losing water out of the waste port on the filter valve. I replaced the valve head but that didn't help any. I shot some videos to show you what it looks like. Let's see if I can get them on here:

The first shows you the problem.

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Here's the second one showing what happens on recirculate.
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The last one shows you the loose handle.
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If you can help me fix this, please post a comment here. Thanks.

God Bless,
Dadofmykids