Don't know enough about the technicals on the paint system to comment on the
seven
day window but sounds like an adhesion bonding factor; some systems give you
a 12hr window, some 21 days...
There are a few camps with conflicting views; some swear by water based systems,
others solvent based.. Some swear by rubbing back and buffing the final top
coat on two pak systems, others never rubbing back and buffing an
"off-the-gun-finish"
(reason being the sealed paint film is opened up to microscopic holes
and allows stuff to set up house in the holes causing the lustre to diminish);
can attest to this being true, but with a white finish you would just hard wax
it once a year and it will still be great. If you get a good result off the
gun go with that and a good UV wax.
Paint success is mostly dependent upon knowing how the system chemically works
with different component layers; flash, re-coat, and cure times. And humidity
scale when mixing for the spray pot each session.
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