I have a problem keeping the #11 caps on the nipple of my DGW Hawkins. They fall off. I have tried 4 different nipples and the problem persists. I have tried CCI and a German manufacturer caps, same problem. The only way to hold them on is to pinch a little to deform the cap. Not easy at 15 deg. with gloves on. Does anyone make a nipple that is knurled or chamfered to hold the cap? Also what is the difference between a #10 and #11 cap. What are some of your thoughts on converting to musket caps (they really grip the nipple) Lastly what is the maximum size the small hole should be in either a #11 or a musket cap. Yeah, I'm new at this! ::