I bought a 2001 3.2 motor off ebay for a swap on my race car. I purchased it in August. Finally got it installed and when we went to crank it over, it locked up. I did spin the motor over by hand before installing and had no issues. We stuck a borescope camera down the spark plug holes and found this is cylinder 3. The valve is broken from the stem, flipped over and pressed into the top of the piston. Sick.

The seller is refusing to issue any refunds because he has a self proclaimed 90 day warranty, which has been exceeded. Does anyone have any experience dealing with refunds/returns through ebay? The listing stated it was a complete, running motor with compression and leakdown numbers (all looked good). Any help is appreciated. TIA