Help with Install on new Spost Steering Wheel

[Already Gone]

You'd think for what they charge for one these and they come as a complete kit they'd put an install illustration in the box. Okay first question the silver thing that that the horn button attaches to does it go under or on top of the steering wheel. As you can see I put it on top and think it must go under. I didnt try to fit the horn cap on as I had had enough of it for one day. Second pertaining to the same piece there are 3 things for the screw to go through to attach to the adaptor. One is more flat than the other two does it go in a select hole on the adaptor or any other reason its different. I did drive the drive the truck bit with the new whellattached and the 15 inch diameter is a perfect size for the truck.