Hi, wondering what I'm doing wrong, When I bought my 57-3100 the horn was not functional. The owner had hooked up a different horn by passing the original wiring by putting in a button. The horn is in place but not wired, My concern is the horn button assembly.. I recently replaced the contact and spring assembly,the horn button contact assembly and the horn button. The horn cap doesn't sit into the contact and falls out. There is a large gap between the button and the steering wheel maybe 1/2" inch or so. Does any of this make sense. Is there another part that is missing? Thanks