How to reinstall 1983 Porsche 944 steering wheel?

Recently my 1983 Porsche 944 horn cover (I guess that's what it's called..the thing you push to activate the horn) fell off. I do not know why this happened. I tried to put it back on but there are screws that seem impossible to reinsert without dismantling the entire steering wheel. How do you put this back on? Is there a way without taking the steering wheel completely apart?|||It is called a horn button, If it does not have a snap lock, or screw that come through the back of the wheel, you may need to buy a new horn button and see if it come with a spring lock or some way to take it off and replace it. If you do not get a good answer, call a Porsche service department and ask then. I use to call sercvice department when working on some thing that I did not under stand.|||the screws you see hold the mounts for the horn cover. they become brittle over time and brake off over time inside the cover