Unfortunately i'd probably be the thinnest there so its not that that's causing the problem
It was evident on another one i looked at and that was a 4H so don't think its to do with it being a 5. Only done 17K miles and by condition of interior i don,t think previous owner went to WW either ?
Seems to be inside the actual seat back when press on it when not sitting in it???
Surely some one has had it as well??