Anyone else having trouble getting comfortable in theses seats? For me it isn't an adjustment problem but something with the bottom seat cushion itself, specifically the bottom of my buttocks down to the bottom of the upper thigh and up the side of the leg a bit in the same area after a long drive that area of my leg feels numb. I though it could possibly be that I have my right leg extended when driving but even if I sit in the car with both my feet equal distance apart on the mat my right leg starts to feel a bit numb. Anyone else experiencing this and what did you do to correct the problem? thanks.