Hi Grumpy, will try to get measurement from a new or near new camshaft from my end, but not likley to have that much luck. Have measured old pin by moving weighted arm back out of the way and got lenght- 0.9505" and the thickness is 0.0855". Have a coulpe of photos showing the pin that holds the weighted arm on. [Linked Image]
[Linked Image]
As i dont have a punch thin enough no doubt i will need a press to push the pin out and new one back in. Can go down to local engineer shop and see if they are able to remove pin and once worked out to make a new decompression pin, that cant happen till monday though, lucky buggers get the weekend off.