Help fixing chuffing Annie

I've come across a used cuffing Annie and it's not chuffing so I opened it up and after cleaning it I'm thinking it's missing 2 pieces that rubs the spring coil as the wheel turns. Has anyone opened up one to know what pieces I'm missing? It looks like I'm missing 2 rods with whatever cogs connect with the driving wheel. Any help sending me pictures of the missing parts would be appreciated as I can try to find spare parts to replace