I had sold a transmission on craigslist that was in good condition and worked perfect. I sold it for 800, private party and met up at a local mall. He had installed it and says gears 3 and 4 are messed up and now wants to take me to small claims. How do I know that the "bad" transmission is even the one I sold him or that he didnt mess it up upon installation? Like I said the transmission was in perfect condition when I owned it. He has posted on a forum site all my personal info and that he has contacted local authorities, made a report, and he also has friends on there who have harassed me on facebook.com and made threatening comments towards me on his forum post. What action should I take from here? I have responded back to him with craigslist terms of use #15 which is 'Disclaimer of Warranties' and talks about selling is as is at your own risk. I also stated that there was no intentions of anyone being ripped off and I dont feel its right to post my info. Any advice would be helpful, thank you