Originally Posted by rmfnla
Except that 9 & 10 speed cassetts are no longer pinned together...
Maybe not all the cogs, but at least the three big cogs on my Ultegra 10 cassette are pinned together (can't remember if it was 3 or 4). Makes sense since for a given chain tension, those cogs exert a much higher force on the freehub than the little ones.
I haven't been working on bikes long enough to say this with any certainty, but I would think digging like shown in that picture would only occur if the cassette was not properly tightened onto the freehub (too little torque).