Balance Shaft & Gear - The only reason I had to do this was because I was clumsy and broke the delicate piece of flange, and I needed to break down the shaft in order to install the (new) flange piece onto the shaft. If you're not a moron like me, then you won't have to do any of this. Just be careful, because these parts are extremely delicate. The piece is not in yet, therefore I do not have pictures.