Why don't they agree? They are very positive in what they profess online.......as a rule. Like."this is how you do it". It would seem that they should all have pretty much the same answer, but they don't. I believe as I have stated ..... they don't really know what any of these birds are really carrying, but their ego ...in some cases....does not allow them to say "I don't' know". I don't know if this is true, but I have heard several times now that chickens have many more gene possibilities than any other animal.From The Classroom @ The Coop (where all the genetics junkies hang out) ... Rhode Island Red is:
"eWh/eWh, s+/s+, Mh/Mh, Db/Db, and possible sundry melanisers"
It's those "sundry melanisers" that will effect your beetle green, and, I believe, the feather quality, which goes beyond just the colour genes. If you posted this question in a genetics forum like The Classroom @ The Coop, you would, I'm sure, get LOADS of opinions that would make FAR more sense to you as someone experienced with breeding the birds. You could then sift through and perhaps experiment with some of the possibilities that resonate to you based on your experience and what you already know about the background of your line.
From what I've heard, Rhode Island Red is a VERY tough colour to get right.
I must admit that it makes me smile when people dredge up the "chicken calculator" and tell me this is all you have to do............
Walt