I was very late paying the final fee on my mother's headstone. The contract that I signed states that the manufacturer of the stone owns it until the final payment. After the installation of the stone, I still owed $375 balance (Orig. $1,500). The headstone was removed and although I paid the balance, I now owe an additonal $345 re-installation fee. Did the manufacturer have the right to remove the stone from private property?