Hello!

Car is an 88' Sierra 2.0 with original standard two spoke Mk2 steering wheel.

My horn is not working because there is no contact between steering wheel and horn button on the steering wheel. There are three screws between. When I adjust them too tight then after some while horn starts to "beep" all the time, which can be very irritating when driving around city. If I adjust these screws too loose, then sometimes you can honk and sometimes you can't.

How to know how tight you should adjust these three screws?