I have an old H&R Model 1900 Single Shot shotgun that has a couple of issues I'd like to try to remedy, I'm just not sure exactly how. The first is a crack in the stock. I've attached an image below: What's the base way to repair the crack to ensure that it holds during shooting? Second is related to the crack. At some point, to "repair" the crack, the stock was wrapped in electrical tape. I am considering refinishing the stock, so is there a good way to get the gooey, stickiness off before I sand the stock? Third and perhaps most difficult to describe is the barrel. It wobbles (for lack of a better word) left and right a bit. As I hold the barrel, I can gently move my hand back and forth and the barrel moves slightly left and right near the break at the breech. I have no clue how to remedy that. I'm hesitant to shoot it with the barrel moving like that. Thanks in advance for any suggestions.