Magneto man, this has been a very educational thread, thank you for posting the beautiful pics and explanations. The strobe shots of the points bounce is very illuminating, it does look like there is a fair bit of extra material on the points moving arm with a lot of scope for judicious weight reduction especially compared with the Goldie points set up.

It is not clear to me how the Bosch points arm pivots, is the fulcrum point beneath the rounded tapering plate secured by the brass top hat washer, is it possible that the pivot bearing could introduce stiction and exacerbate the points bounce?

71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod