This could be "finessed" even more by tweaking the position of the new dowel holes and slotting the three mounting screw holes slightly!
Or even driling the holes out to fit an offset dowel button to give almost infinite variation.
..... wait a minute! The new owner of a motor "finessed" like this would probably make disparaging remarks about the "Previous Owner" Unless the actual cam advance/retard was stamped on the sprocket by the holes......
And Ihave just paid out GBP25 for a Kent Vernier Cam Sprocket too.