hey rick:
i used the hobbico cs-70 servos in my gp pitts they are 106 in-oz @ 4.8 volts they are working great for me, you can get from tower @ 39.99 each & you can get 2 for 76.98, they are metal gear ball bearing hi torque, & i think they are the best you can get for this money. just my .02 worth