Seat Rattle - passenger 2015 Tacoma

My passenger seat rattles as well and i have taken it in twice. Service department claims all bolts are tight and that it's a "characteristic" of the seat...... Sorry but its a Flaw. Its not the seatbelt hitting the seat, its the lumber (back part) of the seat that is to loose. If anyone has any suggestions on how to fix please reply, thanks

 

fold up a hand towel and shove it between the seat and the center consol. I used hard drive foam but a towel works.

that rattle drove me nuts. that one and the window creaking. and the cross wind howling. and the leaf springs chirping...