I've seen a few pictures of mashed distributor gears over the last year or so, the trouble is one does not generally know their provenance nor whether they were properly installed.
I'm aware of two or three apparently independent sources of gears.
I also suggest it is wise to replace both dynamo and distributor gears at the same time, so that you don't have a new gear meshed with a worn one. The height should be at least roughly right and, in a newly rebuilt unit, I would check there is no tightness in the distributor bushes (or resistance to turning, other than the points on the cam of course) to unduly load them. Plus of course they need some lubrication.
I don't know how to answer your question directly Simon but I do feel this is one we all need to get to the bottom of.
edit: We crossed posts Ruairidh but I've heard the same about the supplier I guess you are talking of. Good old ones may indeed be a safer bet, at least to carry as spares.
I'm aware of two or three apparently independent sources of gears.
I also suggest it is wise to replace both dynamo and distributor gears at the same time, so that you don't have a new gear meshed with a worn one. The height should be at least roughly right and, in a newly rebuilt unit, I would check there is no tightness in the distributor bushes (or resistance to turning, other than the points on the cam of course) to unduly load them. Plus of course they need some lubrication.
I don't know how to answer your question directly Simon but I do feel this is one we all need to get to the bottom of.
edit: We crossed posts Ruairidh but I've heard the same about the supplier I guess you are talking of. Good old ones may indeed be a safer bet, at least to carry as spares.