A  'nother thing you can do is before you run your sim, open your Animation Pallette (if it isn't already) & press Play. Watch for any actors (hands in this case) passing through the body/ clothing; Poser tends to take the "shortest route" between keyframes, so if you have any undesirable intersections, add a new keyframe (or a few if ya need to) somewhere in the animation and alter your pose there to avoid the intersections. 

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