Just sayin' it's a pleasure to see a castellated nut even more bashed around than mine. It must've been off & back on a few times...

Hi Robb,

Your comment on the tapped holes in the clutch spring nut is incorrect, the army specified 3BA (not 2BA). I did this mod to my M20 35 years ago and recall having problems finding 3BA screws as it is a relatively odd size. The mod worked well too.

regards, Richard