Jay, I have been thinking about this one. I have only seen one ATK crank and the weights were not in the hole they were on other web. The question I have is the weight needed is to counter the lighter weight of new rod (static balance) it seems quite a coincedence that that same amount of weight also would counter the difference of the two halves? Ideally the correct weight rod would be used and either lighten the heavier side of crank or add weight to other side (dynamic balance). This would also need to be in correct position on web to counteract WHERE the crank web is lighter.
My Winky crank (static) balance was corrected with rod and the crank sides were not balanced at all (dynamic).
ATK crank weight is added to the correct side but is it the correct weight to also correct the dif in sides in correct spot.