My ex has not paid maintenance for the last 5 years for our daughter. In divorce settlement, I was awarded the house with a 24.9% charge on it awarded to him when I sell. Having to sell now, as he put so many clauses in the settlement. My question is this - do I have the right to work out and deduct a reasonable amount of back-payment now that he has remarried and lives free of charge in his deceased Aunts house? Any help is really appreciated. Thanks