I have found the best way to adjust the rear suspesion on my 559 Quest, "Don Quixote" is to gently lie the bike down on its right side ... preferably on a soft grassy verge with the front wheel disc brake assembly, the right hand handlebar grip, the seat surround and the rear hub all bearing the weight of the bike and no weight or strain at all on the Kind Shock Kspeed 261. This acheived, now grip the top and bottom sections of the Kind Shock Kspeed 261 with left and right hands and rotate the top rubber surround against the bottom section held still. After a couple of turns, stand the bike up and sit / bounce on it a few times. To chck your adjustment have a friend measure the seat travel from the gound as you sit on it.
With my bike, "Don Quixote", I have a carry rack mounted on the seat support post .... which in turn requires good clearance from the back wheel as I have a double barrel air pump suspended beneath the rack ... held in place there by velcro straps.