Excessive Isolines when Rendering 'Drawn' Style in NavisWorks

[lamensterms]

Hi guys,

 

Hard to explain my problem, so please see image below:

 

 

Using Navisworks Simulate 2013, trying to render an image with the 'Drawn' rendering effect (Presenter > Rendering > Standard > Sketch > Lines). I am finding that using this style of rendering produces some excessive iso/tangent lines. This seems to be a result of the way the models are translated from AutoCAD to Navisworks (and the way NW manages its shapes).

 

Just wondering if anyone knows of a way to adjust the sensitivity for this render style or another way to have these extra lines omitted?

 

Thanks a lot for any help, looking forward to hearing back.