Here’s a take of two halves; this bass came in May for a setup. The truss rod was very tight but there was way too much relief. I was advised that Warwick truss rods are very thin and did not want to break it so the owner got in touch with Warwick. This was the second neck the bass had been given and Warwick at first would mot accept there was and issue, sending me videos to teach me how to do a setup. Nice. Anyway, they finally agreed to take the bass in and sent the bass back with another new neck (third time lucky). I’ve finished the setup and the truss rod does work on the this neck. Struggle to play six strings on a bass though…