Horn button reassembly

Help! Can anyone show me how the horn button (not ring) pieces from a ‘53 Wasp go back together please? A description or better still a diagram would be great or even better still a series of photos of each piece back in position. Unfortunately the cross section diagram in the workshop manual is useless. The base plate (bottom right hand corner in first photo below) presumably goes in first but is there a tan colored rubber washer about inch and a quarter diameter that goes in after that - before the retaining nut? (See third photo). I had this mysterious rubber washer on the bench and it just seemed to fit.
By the way if you’re wondering why there are two screw heads in the steering wheel hub in the second photo below, ignore them. In a final attempt to pull the wheel off to paint it I ended up drilling two holes to put puller arms through. The wheel still wouldn’t budge so I plugged the holes with a couple of screws.


By the way if you’re wondering why there are two screw heads in the steering wheel hub in the second photo below, ignore them. In a final attempt to pull the wheel off to paint it I ended up drilling two holes to put puller arms through. The wheel still wouldn’t budge so I plugged the holes with a couple of screws.



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