So I followed the best directions I could find when re-assembling the cartridge, which is to fill the cartridge with oil most of the way, cycle the rod for a few minutes to work out all the bubbles, get the oil level high up near the overflow holes at the top, force the top cap/compression valve down into the oil bath allowing it to push out the excess, then cycling the damper until I'm blue in the face to somehow purge out the rest of the air (how exactly does that part work?). I guess it must just squeeze past the ICS piston o-ring and BV o-ring. I can still hear a tiny TINY bit of "swishing" inside the cartridge, but get no damping dead spots at all. It does top out a little hard when I'm cycling the cartridge by hand, and comes extended all the way (doesn't stick down any distance at all as if it had some negative pressure). By the book that sounds right. Is it? I guess since I can't really tell if the compression valve at the top is fully bled or not I'm questioning whether it's purged. I don't really see how it purges other than burping past the o-rings, which seems like a kind of cheesy way to do it.