Good Morning Everyone, I recently did some sculptures for a Clay Animation video. The figures I made out of Van Aken Plastiline Clay. I have had them for several months now. I have stored them in a cool, dry place. !!!!!!!!!!!!!! BUT THE OIL IS EVAPORATING and they are DRYING OUT FAST and STARTING TO CRACK !!!! ????????????? What can I do to Moisten them up again ?????????????????????Hope to hear from someone soon!Sincerely,Arted68