We've had a few old LP Jr's come through in the last couple of years and have been noticing a pattern of the strings sitting too close to the pickup poles when we set the action nice and comfortable. You can't play on the highest frets without the strings hitting the pole pieces. A 1960 model in particular is frustrating a customer.
You can't reset the neck without altering the flat surface of the top. If you were to remove and shim the neck, the tenon would be poking out above the top and the pick-guard wouldn't sit flush. Or if you tried to change the angle inside the pocket by sanding a different angle on to neck or pocket, the tenon would dip below the surface - either approach changes the very nature of that guitar.
You could sand/grind/file away at the bottom of the pickup or deepen the pickup rout, but again you'd be altering a vintage guitar dramatically.
This problem doesn't seem to happen on modern Jr's, suggesting to me that over the years, Gibson identified this as a problem and tweaked the neck angle a little. The owner of the 1960 model checked and says the pickups on his vintage and modern guitars are exactly the same height, so the pickup profile doesn't seem to have changed.
Anyone else encounter this scenario or have any thoughts on the matter?
Much obliged fellas.