How hard will it be to gain temp custody of my two grandchildren if my daughter signs the agreement ?

You will need to hire counsel to accomplish your goal. The court is not fond of trading children back and forth between custodial individuals....

What are the odds of my ex receiving a 50/50 parenting plan?

First and foremost, hire counsel. You should not be going to trail unrepresented -- bad idea.

If she took the kids to medical appointments for emergency's that wouldn't be contempt of court, otherwise you might have a shot, however, you must...

Visitation verbal agreements not honored

If it is not reduced to writing, you will have difficulty. There is no reason that the court should believe you over her -- he said/she said is the...

Right of refusal

Absent an agreement with her, you would need to file a Petition to modify the PP. There is no way too guess as to the outcome because there are two...

Change of custody

The grounds for changing custody are that you have to show that a substantial change of circumstances has occurred since the last order was filed...

How do I get a court order to clarify that my ex has to provide her recent dirty UAs to her doctor who thinks she's been clean?

Simply file a motion asking the court exactly when you are asking here.

Does a 14 year have the right to chose not to participate in a visitation plan with his biological father?

No. And if a parent has been found to facilitate in any way the child's refusal to go to visitation, that parent may be held in contempt of court.

When is notification required I order to move?

1) When the intended relocation of the child is within the school district in which the child currently resides the majority of the time, the...

My ex refuses to provide proof of child care expense

You'll need to file a motion asking her to procuce child care receipts.