Hi, I've just received two kits Gr1-sf and Tla-r. Both necks have back bow. The Gr1-sf neck has a slight 1 mm bow however the rosewood Tele neck is around 2 to 2.5 mm. I am concerned that string tension on these necks may only get them back to straight at best with no neck relief. I've loosened off the truss rod with no improvement. Should I be concerned here?
Rodger