Mr. 16 bgauge,
Help is on the way; many savvy flinters will chime in. I sharpen my flints on a whetstone. I use crocous cloth to polish up the frizzen face and get better sparks and longer flint life with a smooth frizzen. I dry all oil off the frizzen with a cloth before I load up. I wipe the residue off the flint every few shots. Bevel up or down is not a concern so long at the flint hits the frizzen at least halfway up from the priming pan.
Hope this helps.
Adam
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Adam Helmer
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