Kyosho Blizzard sprocket mod

Kyosho Blizzard sprocket mod:
Here's the mod I did for the Kyosho Blizzard srpocket. It prevents snow packing up in the area between the sprocket teeth. When snow packs up there, the part becomes a big ice cylinder, and doesn't drive the caterpillar anymore. The indentations in my design prevents that from happening.
I also included the design for the original part.