Heya Mad, I don't know if you've come across this yet, but a function I find handy in making spaceships, etc., is a command to detect unmatched surfaces. These are the pesky gaps that keep our stuff from being solid.

script:var gd = moi.geometryDatabase; gd.deselectAll(); var breps = gd.getObjects().getBreps(); for ( var i = 0; i < breps.length; ++i ) breps.item(i).getNakedEdges().setProperty( 'selected', true );

You can assign this to a keystroke via the Shortcut Keys options, of course.