05-07-2020, 02:14 PM
The hollow in the beading seems to make sense, as ti allows some deformation or "squish" without looking out of kilter. It does make sense that there would be a notch to accommodate the clips so that the bonnet would not rub on the clips. I wonder why the slope of the flatter part. Perhaps to accommodate some profile variation?
Erich in Seattle
Erich in Seattle