Can anyone confirm if part number 67-1401 is 5/16 whitworth thread?
This is the grub screw for the non return ball and spring. I am going to do the conversion to A65 type on this, and it just seemed odd that this would be a whitworth thread.
Another question: I see the A65 and the A10 springs have different part numbers. Looking at the pictures the A65 looks like a stiffer, thicker spring. Which spring is best for this conversion?
Thanks,
Lee
