^^^THISsomething is not properly located, once you’re sure the spring and motor locations are correct and line up you may or may not have to nudge the springs into the valve hub slots with a small screwdriver when pushing the motors down evenly over the studs, and only tighten down the nuts when you can push the motors down flat against the flange by hand..if you can’t find your instruction sheet you can also go to his website for this info as well