I agree RAH, and I think Bob Lusk would agree also....even to the point where advice he gave, or something he wrote, is often relative to a particular set of circumstances and should not be interpreted as an absolute, relevant to any and all situations. I think sometimes we lose focus in that regard.

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.