Yes, Biggles, I wasn't happy with how it looked like it was floating and so I skewed the vehicle. However, it was not possible to adjust the suspension, especially since on this kit, the suspension arms are molded as part of the chassis side panel. What I did is move the Marder in such a way that all wheels are now supported in some way, by the ground, resting atop track teeth, by the anti-tank obstacle rails. I did have to take a bit of artisitc licence with the second raodwheel on the left side. I have it angled outward (suggesting damage to the axle by the rails), leaning on a rail. The track sag actually makes sense if you were to see the scene in person because of how the tracks are damaged. The right and left sides are subject to different tensions. Also, the tracks are frozen in place.
In case it is not clear, the Marder is not on a mine crater. The scene was made to depict Russian anti-tank obstacles embedded in a ditch or gully, covered by snow. A vehicle coming down the slope would not be able to see the rails or be able to stop in time and the forward momentum would carry it forward enough for many rails to cause damage by damaging tracks/wheels and penetrating the thinly-armoured chassis bottom. This scene shows the vehicle after many months rusting away, as the snow is beginning to melt:
Here are some hastily-shot pics of the revisions. I think I need to take some clearer shots to show the corrections, but until then---
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