Strut rod bushings
roll pin also known as a spring pin, cylinder with a split in it
cotter pin
well you might have them, they'd work in this application but would be a bit thin of the wire for the size of the shaft they'd need to clip around. but they look like a hair pin, kirby grip / bobby pin of a size suitable for Medusa. kinda thing you stick through the steel pegs that hold the legs of your engine crane up when its folded
split pin, is split yeah.... stick it through, splay the ends
if you think you have wrong bushes you can measure to see if installation pushes the spindle back.
Dave