Since the top of the spring can be rotated and seated in any position it is not critical how much you cut off the spring. What is critical is how you reassemble the spring, upper A arm and the perch. If, when assembling, while you are loading the spring you see that the springs is not seated properly in the perch you need to unload it and rotate the spring so it will be up against the stop on the perch. How much you cut off the spring is only critical to the ride height not for how it fits into the stop on the perch.

69mach the tangental end is the bottom of the spring. If you cut the top the spring will be unusable. Use a cut off wheel to cut the springs.

 

That's what I thought, but did not recall that term being used before. So it is pretty simple after all.

 

I had never heard that term either.