Overnights started so they called for a modification on the child support BUT I also found out that the defendant left his current residence - a coop to live with his parents to "save money". He rented out the coop temporarily. I know that I can consider as some type of additional income to calculate in the CS. But he insisted that there is know additional income because he is using the tenants payment for the mortgage, coop fees & utilities. I understand the mortgage and fees and I'm arguing that utilities cannot be computed because it changes every month and it's NOT a lanlord's obligation to pay for it. It started to look shady so we asked for a copy of the lease agreement. To validate the shadiness, he provided me with a different copy than his lawyer did. So I want to fight this.