Ecru

Well after 2 months owning this new LS430, I just noticed that the driver's seat starts to become too soft especially the back support on top of the lumbar support. This gave me terrible backaches whenever I drive the car. I tried all possible seat positions and lumbar support combinations (I'm used to this since all of our cars have the same seat adjustments) and I still can't get the right back support. I compared it with my previous GS400 seats and they provide better support. For those who owns this new LS, do you have the same driver's seat experience? Thanks for any comments.