CO. Mom and I have 51-49% physical custody. Current support order states I pay her $400 per month, and she is to use that amount to pay for our child's kindergarten tuition. Mother has not paid any tuition and is over $3000 past due. Can I use this fact to file for contempt of court? To change primary custody? Do I pay the outstanding balance and lose out on over $4000, and allow the mother to pocket that much money???