hi phill : its me again, my mind dont seem to do what it should, on my gyrace what i read is to use neg. pitch on the blades, im useing a clark y airfoil. neg. pitch seems backward to me i am shure i used pos. pitch on my first gyrace,same airfoil somewhere between 5&10deg. it flew great. i could be wrong its been a while. any ideas can you or anybody else shed some light on my dilemma. AL