Is that set up a single shaft or paired shaft T&D system? If single shaft I've seen the same thing with them
The Harland Sharp single shafts are usually a .5 ratio higher than advertised, 1.5 ratio check to be 1.55, 1.60 ratio check to be 1.65 'I have one motor now (440-1 heads)that has a set of Jesel paired shafts rockers that are suppose to be 1.55 ratio, I am going to look at my notes and make sure exactly what their true ratio is I'm thinking they where dead on with checking springs, I set them up with 325 lbs. on the seats and 870 Lbs. opened, I'll pull several pairs off and see how they measure now