Exactly what kind of movement?Actually my driver's seat is just a tad "spongy" to where you can hear the springs and wonder about replacing myself...Maybe yours is doing something similar.I don't know about adjustments since I'm assuming it shouldn't move unless you want it to.period. Hopefully someone can help us both out.I actually just got a catalog from performance products that has all of those replacement parts if need be including the frame and cushion although I wonder how difficult it would be for a DIYer to replace (especially without screwing up something like my heated seat feature).Any ideas?? good luck matt