Which spacers go where on 2650?

[SpEEdyBL]

I opened up the motor to clean the bearings and I forgot which spacers go where on the rotor. From the wear marks, it seems like the short spacer goes toword the ouptput shaft end, but it is hard to tell. I don't know if it is just me if the shaft sticks out longer than normal as it measures roughly 21mm from the mounting face. Also, where can I find replacement bearings? One of them seems a little grindy.