Quote:
That joint looks fine to me. There is nothing to worry about there structurally or sonically IMO. As for appearance, the pickguard should cover up that joint. And don't forget, you will have a build up of finish on the neck (even if very slight) when you do the final assembly.
With a screw-fixed neck you don't want a fit where you have to force the neck into the pocket. You want it to basically "drop in" maybe with a little downward pressure, but that's it. A little space on the sides is a good thing.
This does two things: allows for expansion with humidity changes, and allows for neck adjustment/string alignment.
The more important fit is the mating surfaces of the bottoms of the neck pocket and the heel.