They say either party can request a modification if a 15% change occurs. I guess that is to include the amount of child support or custody that has changed. However, when I was in court in Sevierville, TN she and I had a disagreement on how much money should be added to the CS amount for Child Care. Our son had been in daycare 1-2 days a week for 4-5 months, but she was requesting the court to base it on 5 days a week because she was thinking of putting him in full time. The DA agreed at first, and I questioned if we were going on what she "thought" would happen, or on past events, like everything else was computed. The DA agreed to keep it at 1-2 days, but told her that she could come in ANY time if he started going more and they'd raise it. I found it predictable that she did not tell me I could come in at ANY time if he went to daycare less and they would lower it. I was nice too, and my baby's mama was a jerk to the DA. What an unfair system, such a conflict of interest!