Hey guys, I need your help. I bought my daughter some of those "droid factory" 2 packs that were Wal-Mart exclusive for Christmas. The one with Plo Koon and R4-F5 has a problem. The wheel on R4-F5 in the middle pushes up inside the droid for standing. It appears to be made to pop back out for rolling around. However, after pushing the wheel inside, I can't get it come back out. There appears to be a button on top, but it does nothing. I checked the box thinking there may be some instructions or something, but nada. Is anybody familiar with this Astromech Droid mold that can tell me how to get the wheel to pop back out?