Hello everyone , I have just purchesed a Swivel Barrel double .50 Cal Leonard Day percussion Rifle. The gun is like new and I don't think it has ever been fired . The only problem is that there is a bit of play a the swivel joint .I would like to tighten it up a little but have no idea how to. I am hoping someone on here may be able give me a pointer or two on how to tighten it up.