In my setup above I have used a plastic bush for bearing, 12 mm high, the original size more or less I believe. The head lug was machined for old BMW taper roller bearings 34-51-12 mm . The lower Brampton casting just 1 mm clear of the head lug, you cannot go higher so all depends on variations in castings where parts hit their stops. Anyway I like to have defined faces for stops and not slopes for big variations of stops from tolerances. In case the Brampton sits lower you get even poorer stops. So my consequence was welding - which is not critical on the stop extensions even with cast iron. Real cast iron is welded with nickel rods basically that you can use anywhere when in doubt about brittleness. The welded stops should keep up in normal use , for tank slappers on Bramptons no argument, no ? Even so , I will fit hydraulic steering dampers to the Brampton, less so due to tank slapper anxiety but for smooth driving on bikers´roads, one handed on rough roads no troubles then. I found the hydraulic damper on the tele Horex great on rough three dimensional roads where there was some judder in the handlebar with friction damper only.
Vic
Vic