Why not just post who it is and call them out. Have some balls..
I'm curious to know although I don't sell on this forum any more.
Seriously though sometimes its just easier to sell at a swap meet where you don't have to worry about this kind of bullshit, returns or warranty.. Plus the buyer can see the part in person and decide then and there if they want it.
Before anyone gets butthurt I am just joking around about the balls comment..