<p>The film type should be chosen in the 'negafix' window.<br>
In the Densitometer window, try increasing the 'bits' setting as much as possible. More data per pixel will give you more ability to adjust in lightroom.<br>
In the Histogram page, try shifting the middle '0' setting towards the 'mountain'<br>
and in the 'scan dimensions' page, try setting the Resolution ('Res') higher .. near the end of the green section of the slider.</p>
<p>Hope those suggestions will help.</p>