Interesting. I emailed Martin, they said said to use a 57" inch string as it should be 3" less for this bow. Yet, I left the 56" string on overnight. The brace height is now at 7 1/2" which is the upper end of the brace height of 7" to 7 1/2" for the 2009 model. The recommended brace height is 7" only for the 2010 model, which this is. So, if I shoot this string it'll probably lessen the brace height. But, according to Martin and some of the posters, I should probably go back and get the 57" string. Do you think that would be best? Did Koger tune the other Jags with a 56" string?