Westhawk
you got it right.
Balance weights work when you are just a tiny amount out of balance (having already installed moment weighted blades in pairs).
When you have large shifts in moment weights (a cropped blade tip on one side, then you can save yourself from boprrowing yet another spare blade from a line station, by simply applying the same maintenace fix to the opposite blade with an approved crop.
As it turns out the very tip corner of these blades is pretty low in stress, )both vibratory and centrifugal) while at the same time being so thin and at the highest speed is the most easiest damaged by FOD or case jamming. Fortunately there is not much performamce loss when cropping off a triangular piece.