This is mostly academic at this point, since he still has plenty of room at the top of the shells in both of his current seats, but I have been wondering about this.
When I first set DS way back in his seat with a straight back, he's a good inch higher in relation to the top of the shell than when I take him out. He curls his pelvis under in the seat and slumps down. Same for the harness straps -- when I sit him in there, he's right even with the #3 slot on the TFP, but then once he slumps, he's about an inch below (I have the straps set to the #2 slot because of this).
So, which position would you measure from? Since he would most likely ramp up in an accident, go with the higher of the two?
When I first set DS way back in his seat with a straight back, he's a good inch higher in relation to the top of the shell than when I take him out. He curls his pelvis under in the seat and slumps down. Same for the harness straps -- when I sit him in there, he's right even with the #3 slot on the TFP, but then once he slumps, he's about an inch below (I have the straps set to the #2 slot because of this).
So, which position would you measure from? Since he would most likely ramp up in an accident, go with the higher of the two?