Maybe the geometry of modern engines obviates the need for balance discs?
If RR were to release details of all the forward & rearward gas loads, it would make it
all easier to understand, but I doubt if they will do that
even if one searched and found it in the specs or RR book in a form that one could understand, what difference would it make in this thread?
Some poster is still going to offer up a redesign for an obtuse reason other than it's different
