I recently acquired a 45 caliber muzzleloader marked Jukar-Spain. There’s the stock barrel and a few pieces of brass hardware. Nothing else, I found everything I need on the deer creek website except the nipple drum. I called them to ask about it and they said they can’t sell me one for liability purposes but they can install one for $75. Is there something I’m missing, is this drum that easy to screw up that you can’t install it yourself? The last thing I want to do Is blow my face off to save $75 but if it’s just a simple screw it in tight i can do that myself. I would appreciate some wisdom in this area please