Lot of good comments here fore sure. I suggest you dump it and soon, at what ever cost, as it sounds like it is stuck in your throat and is painful. Life's too short to be in pain.
I have many guns like others here and a number of them are custom, most being one of a kind guns designed and built by me. So I have 2 sons and in discussions with them about the guns after I am gone I have told them that the cost I have put into them means nothing and that they should remember the first dollar and all others after that they get will be profit to them! I won't care.
You need to pull this sliver from your finger and get on with life. It was a learning experience. Remember you can never learn from success only failure.