IE adding extra li between li

I wonder if anyone can help solve this rather perplexing puzzle…

I’m working on a site where I’ve used custom fields (via custom fields plugin) to populate descriptions for portfolio items. The list displays beautifully in everything except IE, which inexplicably adds an EXTRA bullet point between each one.

I’ve tried every known css hack, but I think it must be something to do with the ul code. Here it is:

<ul class="specify">
            <li><?php $field_name = "model";$field = get_field_object($field_name);echo $field['label'] . ': ' . $field['value']; ?></li>
            <li><?php $field_name = "year_registered";$field = get_field_object($field_name);echo $field['label'] . ': ' . $field['value']; ?></li>
            <li><?php $field_name = "mileage";$field = get_field_object($field_name);echo $field['label'] . ': ' . $field['value']; ?></li>
            <li><?php $field_name = "price";$field = get_field_object($field_name);echo $field['label'] . ': ' . $field['value']; ?></li>
        </ul>

Any ideas?