Got the shocks off (removed the mufflers anyway for cleaning) and managed to muscle the spring retainers out. Shock in the vise, pull down on the shock shield, pluck at the retainers. I'm not strong, just determined.
Left shock still has some fluid damping, but right one is a pogo stick. Can these be rebuilt? NOS seems expensive at about $1000. Reproductions about $250, but I wonder about the quality. Haven't looked at the Hagons yet. All feedback welcome.