[JesseK]

We pressed the two bearings into the wheels, then put a long 3/8" bolt through the bearings. Then we hand-pressed a bearing into the outer sprocket of the assembly and assembled the wheel as shown. Once the bolts were properly tightened (note -- we didn't use the thread-making screws) we removed the 3/8" bolt et voila! a perfectly-aligned sprocket-wheel pairing. Even if you stick with your roll pin method, I'd recommend this method as a general concentric-assembly method.

The whole 'piloting' problem would be solved if AM/IFI would make their holes 0.192 rather than > 0.2". We water cut some holes on our shooter wheel at 0.192 and it was a perfect slip fit for #10 bolts with no wiggle on the assembled parts.