[kaisers_phoenix]

Hi, I'm no expert but I believe one should consider this factors when timing the waiting time between each coats:
1) temperature
2) humidity
3) stability of previous coat and thickness of coating applied

While we can't see or tell if your coat is ok or not (besides runny paints of course).. there are several signs that gas out is taking place..

1) If you polished a paint that has dried (ie. will not leave thumb prints when touch) but has not completely gas out.. you realized that the shine sometimes will turn dull after a few days later
2) It's always easier to achieve shine in a fully cured paint (coz it's harder)
3) try keep non fully cured painted parts in a tight container, you will still smell thinner accumulating in it a few days later when open it

While I can only guess that during post curing.. thinner/solvent molecules are slowly moving out from the paint matrix and this will make the paint layer harder and more compact.
If we allow enough drying time between each layer, it should dried faster (during the final layer) than to have short waiting between each layer and wait for all the thinner to evaporate all after the last thick wet coat.