Is "not working" a valid reason to seek custody modification?

No he can't. His threats are hollow and designed to scare you

Does the divorce decree overrule the final restraining order's provision about spousal support?

The divorce decree overrules the FRO on this topic

Can an uncontested divorce be granted without a settlement agreement?

You can go to a default hearing where you testify before a judge as to what relief you want. You need to file specific papers asking for default...

Still owe child support??

No. The issue is whether the child is economically self-sufficient and a 17-year-old in your situation would not fit that description.

I want to get the FRO dismissed, if I were to use text messages between us, would it get dismissed or would we both be in troubl

She does not have a prohibition on contacting you however if she was contacting you frequently or for reasons other than issues involving a child,...

Can I get an annulment or do I have grounds for a divorce.

You really need to assert a fraud on the marriage and your question doesn't make that clear.

QUESTION: Do I have a legal argument that my Step-Dad needed to act in my best interest as the executor of my Mom's Will?

You need a estate lawyer. This question can readily be answered by them.

You keep mothers days and he keeps Father's Day.

Why does he legally get our son for 4 hrs on our sons bday but when he has him on his birthday , I don't get time with him.

It is impossible to answer your question in most respects except to say that a child birthday should be split with the parents so that each parent...

What is a 'brief' in family law? how is it different to a certification? How do I get it on the court file so the judge read it?

A brief explains in detail the law. You should offer the court another copy and ask for a postponement if your original copy gets lost again.