My 605MG servo centers worse than my standard Futaba S3003. Weird huh?
I've tooken it out of steering duty (was on a stadium truck) and now it acts as the throttle servo on my 1/8th buggy. Apparently, speed and torque is still there. The reason for putting it as a throttle servo is it isn't under a constant load so it can somewhat stay centered.
I probably won't deal with Hitec servos again. Sorry Hitec. Your radios are great though (I have a Lynx 3D.)