The WD only works with bi-peds (humans). The reason why the front legs fold up is because the WD is setup to use the shoulders of a human. And since the shoulders are extended out on those figures by default. The first thing the WD does is try to put them down in a walking position. So this means--->If the shoulders of a custom figure are down by default. The WD will fold them up. Becaue it's set up to deal with a figure with it's arms outstreatched. Not pointing down. ScottA