Hi, I thought I wrote a reply to this thread...maybe it never got there ? anyway, I got an L2K with a ski slope neck at the 10th ( purchased it as a dog, no worries there) so I took off the strings, let the truss rod go and let it hang from the nut on a guitarstand that only supports the neck at the nut for a week, I also tightened and loosened the truss rod daily, after a week I loaded a light guage set of bass strings and adjusted the truss rod in, let it hang still, set it up and its now 80% better and only a real fussy low action freak would pick up on any issues, im in the uk too and know a good luthier or two if you need anymor help.
