What about applying a clear gloss coat? You wouldn't sand before that
would you?
Thanks.
Some light sanding with 400-600 grit will promote adhesion for the
painted stripes. Then you can watersand with 600 after the stripes are
applied and put on a coat of clear. That will help reduce the bump at
the edge of the stripes and also serves to protect the finish.
--
Kurt Kesler