I live in Washington state. My ex-husband and I sold our house advertising an irrigation system. The irrigation system was manual (it didn't have a clock), it had to be attached to the hose bib and then turned on. The week after the new owner took possesion she contacted me to find out how to work the 'sprinkler' system I gave her the contact information for my ex and told her that I would let him know she would be contacting him. My ex husband went back after the new owner took possession of the house and did some additional work (and spent about $450 on parts & labor) on the irrigation system connecting it to the main water line, to provide better water pressure. He advised her that if she bought a clock he would install it for her, making it completely automatic. He never heard from her again. Until now, 1 year later, the new owner is taking us to small claims court for $3250, claiming we falsely advertised an irrigation system. At the time of the sale the new owner waived the home inspection. Are we wrong? What do we do?