I had no idea what he was talking about, but he works on a lot of revalving. I need to go observe this sorcery.That's interesting. Usually the outer aluminum dust seal housing is just pressed into the tube, and you can remove it with some precision hammering. The inner seal is then held in with a snap ring.
The tricky part is recharging the Nitrogen on a shock body that doesn't have a valve on it. I have no idea how that's done
My current guess is they assemble the shock in a chamber that's nitrogen purged, or they use a needle past the piston...
I agree on slightly underdamped being faster. That could mean many things to many people, unfortunately.