I was just gonna say - I had a Martin recurve and had to call them because MY brace height was in no way near what their manual said. Sure enough, the manual was incorrect as Customer Service informed me! I'm not a big fan of Martin anything, but they have been making recurves since Howatt was with them.

Brace height is a toss up. To high and you can lose arrow speed. However, the bow will be very quiet.

Too low and the bow will shoot faster since the string stays with the arrow longer. However, you can get too much of a good thing and get poor flight since the string is staying with the arrow to long...thus making it wobbly...

Also, don't forget changing brace height will affect the poundage as well - not by much, but it does.

G. Fred Asbell's book 'Instinctive Shooting' has excellent chapters on bow tuning. If you don't already have a copy you might consider getting one.