Hi, i just exchanged NOA with my ex for the calculation of child support. I am the payer, they are recipient. My sep agreement says I do not have to start paying the new amount until the agreement has been updated with both our signatures. No indication who pays the costs to update the agreement. Do I have to reimburse my ex legal fees if they initiate through their own lawyer? Is there a less expensive way to do this? My ex is not cooperative and this is not an amicable situation. I would like to avoid layer fees as much as possible.