CartoDB/Leaflet bring layer to front

I've got 2 layers being rendered separately with this:

var layerSource = {
        user_name: 'jonmrich',
        type: 'cartodb',
        sublayers: [{
            sql: "SELECT * FROM " + carto_table + " WHERE type = 'red_blank'",
            cartocss: '#location_fusion_table {marker-file: url(http://ift.tt/1ycmMDC);marker-width:25;marker-allow-overlap: true;}'
        }, {
            sql: "SELECT * FROM " + carto_table + " WHERE type = 'small_blue'",
            cartocss: '#location_fusion_table {marker-fill:#1d5492;marker-width:5;marker-line-width: 0.5;marker-line-color:#fff;marker-allow-overlap: true;}'
        }]
    };

and later:

cartodb.createLayer(map_object, layerSource, options)
        .addTo(map_object)

Here's what ends up happening:

What I'd like to have is where the red pins ALWAYS show on top of the blue circles. If I turn overlap to false, I lose a lot of detail, but the blue circles aren't on top of my red pins. Is there some sort of "z-index" or "bring to front" that I can employ here?