[quote name='Big_Stu' timestamp='1354983264' post='1892636']
I read in a Fender book years ago that that was the reason for the move to the head. It said that it was adjusted by slackening the strings, slackening off rather than removing the pocket screws until the slot was clear of the body, making the truss adjustment & then reversing the process; repeat as necessary.
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Cheers Stu. I'm thinking that this is the right way. Bit of a faff like, but as you say, that's why it was moved. Although, having it at the heel must give a stronger head-stock join.