I purchased a gypsy guitar in France and brought it to Canada. Unfortunately, due to the change in humidity, I had to take it in for a setup. The setup work was well done, but it feels as though the projection (volume) and/or sustain has decreased. Fret re-dressing and neck relief change (less relief than before) were part of the repair. I kept the action pretty high (3.9mm) after trying a lower action briefly due to some buzzing (I have an agressive picking style).
What can affect the projection of the guitar? Could this be my imagination or could the change in the neck relief possibly affect it?