Truss rod tightened to the max but neck still not straight

[kiwigeo]

Johnny you use the terminology that "the relief has moved". Meaning what please.

The way I read the posts, he measured relief at 7th fret and it was 0.005". He measured it again a bit later and it had increased to 0.014" without any adjustment to the truss rod.

Johnny how many turns are you putting into that truss rod nut when you make adjustments? How easily is it turning?

[Johnny]

"The way I read the posts, he measured relief at 7th fret and it was 0.005". He measured it again a bit later and it had increased to 0.014" without any adjustment to the truss rod."

Correct.
The truss rod will not turn anymore.Has reached the limit.

[jeffhigh]

You could try what was suggested earlier in the thread
Extra washer
Pull off the nut and lubricate the threads

However there is a chance that by cranking hard at the end of available travel, you have stripped the thread on the nut or the rod, or otherwise damaged the rod.