I've got a .54 cal Hawken style traditional percussion cap ML that I bought from Cableas 15+ years ago. It's branded Cabelas but made by someone else, maybe Pedrsoli.? It's been a fun gun. I've killed a couple hogs with it and it's really accurate. I pulled it out of the safe today for the first time in many years. It had some rust so I was going to clean it. I put the wrench on the nipple and tried to loosen it. Without even struggling, the nipple sheared off in the threads. Crap. I called Cabelas and they no longer offer parts for the model. I'd like to drill out the old nipple and chase the threads clean with a tap, but I dont know the thread pitch and I don't even know if I can find a new nipple. Does anyone know if those things are standard sized? Think one from TC or something might fit? Any suggestions? I'd hate to think the thing is trash.