How about have them comp you for a rental?
I used to have a '91 GMC 3500 with a csrburated 350. When it died I had a place out in Sugar Grove put a rebuilt one in for $600. I couldn't believe how cheap it was. Only lasted a year, and he put another one in for labor only or some deal like that, so I paid something maybe $350 to put another one in. Well that one got maybe a year too, and this guy was getting ticked at me because I kept bringing it back. He wouldn't touch it again and was out of business within a few months.