I have a brand new "Large Siler" lock that won't spark. I've tried Fuller flints as well as Agate. Tried bevel up and down. At half cock, the edge of the flint is 1/4 inch from the frizzen. Sometimes it won't even flip the frizzen open, but some times it does. The frizzen appears to have normal tension and not be any different to open than my L&R lock. I put a small amount of oil in the Frizzen pin just to help a little, but no luck. The frizzen is starting to get a groove cut into it where the flint strikes it. I am worried this may be ruining the frizzen. Anyone else had this issue?