Your supplier would probably not hesitate for a moment to take you into a court room on an overdue bill of $1600 if he thought that you were not intending to pay him, and most certainly would send you notice that you are heading to court in that event. So therefore, perhaps maybe you should send him a letter to let him know that you do not think his position is defendable in small claims court, and if he doesn't want to find himself there he had better get on the stick as it were, and get you your manufacture's warrenty satisfaction.