Thanks for the reply. I do have that info and one other that I know of. Neither of them mention anything about this. .On the block diagram page 2-3 there is mention of the "flatness board" between the 2 hybrids. I'm sure that is what I am trying to get info about. I might just need to set a bench up and mess around with it.
This is CABL.com posting #361822. Tiny Link: cabl.co/mbGh0