I have heard of people using seatposts to open their kings up, but it's not something I'd recomend. The way I service my king, and it hasn't slipped in aaaaaagggggeeeesssss, is open up and get most of the crap I can out with a good clean rag, then I get my can of gt85, make a gap between the two driverings and flush it out with the gt85. I use a toothbrush to clean the helix and then I use a hairdryer (or hoover) to dry the insides out. Once they are dry and clean I put in a few drops of finish line wet loob and away you go.