Update: the seller responded and is a bit irate. Here is his response: "Hi - like I said, I tried the chrono when I put the watch for sale and did not notice anything unusual, certainly nothing close to what you're claiming. You asked a number of questions prior to placing your bid and never inquired about the chrono. You had the opportunity to ask about all you wanted prior to bidding. Everything I stated about the state and quality of the watch is true and no false claims have been made. It was clear that under the terms I stated no returns accepted and you should have asked about all that you though was relevant. I completely disagree with your claim(s) but in interest of resolving this I am willing to talk about figuring out a way to remedy this situation. Any (reasonable) suggestions?"
I don't know what I should do in response here. Wanted to get some input from you guys before I proceed. Thanks!