Excellent, thanks.
? Not sure what you mean.
I literally just came across a paper which clarifies my train of thought above, that Cd is not extractable for tests in which KC < 7. I tested from KC = 1 - 4.5 Cannot tell you how much of a relief that is.
Glad to hear.
Anyway here is the sheet with additions which might help. Ot does the above mean that the sine shift would not be necessary at all?