whale.... as you may or may not recall, I was trying to figure out what to do about a Moxie suspension seatpost who's elastomer block had gone soft... for laughs, I hit up the local auto parts place (not a chain), and picked up a rubber coil spring booster. with just a bit of trimming, this fit in place of the elastomer and seems much firmer than the old block. and hey, 2 for $6, so I got a spare!!
Experience is what you get when you don't get what you want.