Copy. Understood. Thank youAfter all these years of doing this I am hard pressed to tell the difference as long as you really pay attention to your .020 and by that I mean watch your points arm as you slide the feeler gauge in. Any movement by the arm to allow the feeler ga. in indicates an improper method and improper measurement. Takes a little while to get the feel for that but pretty easy to do. By far the most accurate way is to set your points then really dial it in with the timing pointer and VOM.