1878,
One small suggestion; you only have one other feed back on Gunbroker so you are not well known. You may want to consider locating a dealer who has been doing business and has built up a reputation of trust with his buyers. Have him sell the gun and pay a handling fee.
As other have said a no return policy turns folks off. You are dealing with a very very small clientel and they are going to be picky.
Oh yes remember in life always tell the truth but remember you don't have to do more then answer the question. You have said a whole lot about the history and the sour grapes without being asked and telling folks all of that only makes them shy away. Did me!
As suggested above put some sights on the gun and you should consider having the buttplate changed, your repo would be a better choice then what you have, IMO. Give that gun some "Bling" with detailed pictures.