I have an L&R Flint lock Model 2100. My problem is that I get perhaps 10 to 18 shots out of a flint (knapping about every 3 shots) before the flint requires replacement. Now, I have been told that the "timing" is incorrect. The flint strikes the upper 1/4 of the frizzen. The advise that I have been given is that the flint needs to contact the frizzen at about the 1/2 way point. To achieve this, the hammer must be heated and carefully bent to adjust the position in which it will strike the frizzen. I would like to hear some opinions on the subject before I proceed with bending my hammer. As an aside, I have already tried shimming the filint, this helped but did not make a huge difference. Also, I have already purchase an additional hammer should I over do it and break the one that I have. Thank you, I will appreciate any advice that is offered.