Well its been a month and the clear coat is still not ready to be sanded back.
It has finished gassing off, but is still not passing the fingernail test. I'm beginning to fear that painting it when it was over 30 degrees and high humidity might not have been the smartest thing I've ever done. But I'm prepared to leave it a bit longer to see if it finally gets hard enough.
In the meantime I have Tru-Oiled the neck, fretboard and headstock and will sand that back to a high gloss when I do the body.
That's the headstock done for now.
Now its just a waiting game until I can work on the body.
cheers
rob