Some ball joints, due to the way they are mounted (I'm not sure how exactly, this is just my guess) cannot be tightened by the normal Future Floor Polish method, or by the nail polish method. I hesitate to use the superglue method because this is a very precious figure to me. The problem is that after applying Future polish, certain orientations of the joint become tight, but when the limb in question is angled at a certain direction, it becomes as loose as ever. I'm not sure if I can explain it well, but it seems that applying Future makes it tight in only certain angles but not others. I myself do not understand the cause of this. For example, my BW Stampy's beast leg becomes tremendously floppy when pointing down but not when pointing to the sides or upwards. Please do ask if there's any clarification needed, and thanks!