Check the angle of your flints in the jaws of the cock. Thin sheet lead may work better than leather to hold flint at proper angle. Do NOT use anything to hold the flint that may retain a spark- or you may become a member of the missing eyebrows club. Should be such that flint is trying to shave a slice off the frizzen. Sometimes the spring on the frizzen is a bit tight, need bit of grease on pivot point, etc.
Of course, there are flints and flints. Historically, French flints were rumored to be the best. Vaguely remember something about a gent that was surface coating frizzens to increase spark production- turned out it was a uranium alloy. Which WILL spark like crazy- and gives you the opportunity to inhale uranium dust!
Last edited by matt g; 04-24-2009 at 04:45 PM.