I switched to a double action truss rod with a flat passive rod, it’s a little longer, but more important it’s only 6 x 9 mm, opposed to the rather large 10.32 x 11.11 mm of the Martin style rod. Although the latter feels a lot more sturdy and safer, I think it’s oversized compared to my neck and I also got those carbon fiber rods I’m going to put in there.. here’s a pic: