Glosscoat after flat acrylic paint but before decals?

I'll second what Jay has said. Keep the cotes thin and you shouldn't have any issues.

Howdy nw207,

The gloss coat is a must BEFORE decals are applied . They  lay down better and cause less subsequent problems. The gloss coat also is a must for any washes you may care to apply especially good when enhancing panel lines.

I have used Future for a gloss coat or two with no problems but my favorite combination is Model Master Glosss Clear, then 2 MIST coats of Testor's Clear Laquer Dull coat thinned 20% with laquer thinner. the laquer thinner really makes the finish dead flat.

Whatever products you decide to use, make sure to apply thin coats , more than 1 if you need to.  I've made the mistake of spraying 1 coat too heavy and it doesn't work so pretty good.