The longer an Air Cure sits, the better it will be.
I've seen some air cure paints take up to two weeks. That is why I always paint a "test" piece at the same time.
If I get tempted to touch the firearm, I touch the "test" piece instead. That practice has kept fingerprints off of the main piece should it not be cured enough.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)