I ordered 2 of these inexpensive Gyros and was expecting something less powerful, I was surprised when I installed one on my Century NX Gasser. The Gyro didn't need any triming, it worked out of the box. All I had to do is make sure that the tail rotors were being corrected in the right position of the tail movement.
I installed the other KDS 800 on my Century Raven with the same results.
I will be purchasing more of these Gyros.
Why spend over one hundred dollars when you can get as good a gyro for $44.00.