I got this accessory at a train show and it is missing 2 skaters that would spin on the surface. I am sure it is a motor and magnet arrangement like the playground. Chuck Sartor and Mike Reagan do not have the figures to go with the accessory. ARTTISTA makes really neat skating figures with a small stand to put them on. What kind of metal can I use to glue or otherwise attach the figs to the accessory? Thanks in advance.