Can a parent request a 2nd forensic report with court and judge, and does the judge have to grant the request?

It does not have to be granted. He can pay for his another if he wants to.

When is child support considered late?

You can file a violation if he pays late.

Visitation rights are not exercised, what can I do about it?

No. There is no way that a court can turn someone into a good parent.

Does Sole custody and termination of visitations for non custodial parent grants free relocation without any restrictions ?

You still need permission to relocate but if you are sole custodial parent and the other parent has no presence in the child's life then when you...

If he is violating the court order then you can file and enforcement petition.

What do I do if I feel I'm not being heard in court and the law guardian is biased?

Get a good attorney you are playing a risky game and you don't know the rules.

I have joint legal custody and ex girlfriend has physical custody? my son is with me 90% of time .

If they just decided that then there is no real chance to change that.

Can I put something in writing that I want my son to stay with my family if something were to happen to me?

You can put it in writing but it is not enforceable

My husband said he wants to get divorced. I'm in permanent disability collecting social security. We've been married for 6years.

You will not be entitled to permanent alimony.

What can I do to help my son?

Call and report the abuse and file for a restraining order to protect your son from the abuser.