I find the two thin armrests in my wife's rx300 aren't supportive enough..especially when getting out of the car. I'm constantly slipping off of the thing. Is there another center console I can put in there that goes up higher? Those of you familiar with the interior of the lx470 will know what I'm talking about. In that truck each seat has a fold down armrest PLUS the center console comes up to that level too. Any aftermarket products available that can help? Thanks!