Is there a way to calibrate the Water Cop actuator

So I finally got around to installing the Water Cop. Turned out great installed a outlet for power and a access panel in the garage for it. To find the actuator when closes it doesnt turn far enough to be horizontal to completely shut off the water. From the on position it only turns 40 degrees instead of 45 but what I dont get is when turned on it rotates and makes the difference up and turns 50 degrees making the valve perfectly on. It does this on the valve body or off valve every time.
Was wondering if anyone else had this problem.
Thanks for reading.