I am curious about Chris's approach to manufacturing valve gear eccentrics. Standard model engineering practice being to manufacture four individual sheaves and secure them to the axle with a grub screw for each one. It seems clear from the attached photos that, this is how pump eccentric (single flange?) has been done. Is it also the case for valve gear eccentrics? or is he doing something clever to make sure that valve gear is set correctly? Hope you don't mind these questions but your excellent threads are great way to learn how things can be done - thank you!