Is it possible to change the pitch on a set neck?

[WillyPete]

If the neck is set with a positive pitch at the neck joint, can the glued set necks be shimmed or adjusted to lower the action, or is the owner left with having to deal with the ole idea of using a positive pitched neck to reduce fretbuzz?  

I know you could do it with a bolt-on, but how they intended for folks to adjust a set neck is puzzling me?  

[Hellzero]

I guess you're talking about the tilting of the neck, which is impossible to correct on a set neck without ungluing it, correcting the tilting and then gluing it back, so a lot of work.

 

And with a neck through it is close to a nightmare...

 

The only thing you can do is lower the saddles or recess the bridge for lower action.