I revised the clip because the clip Dagwood made didn't fit my Grayskull very well. Here's the original project http://www.thingiverse.com/thing:1157963
You will need to print 2 of these and might need to file the end down a little for a better fit depending on your printer.
motu_castle_grayskull_elevator_rail_clip_v2.stl | 5.4KB |