Is it possible to change out pinion shaft gears with out splitting the case? I have a strange sound coming from my bike so I'm going all out with new Torrington bearing, ev27 cam, machined breather gear, etc. Since I have the cam shell open with cam out, can I install any pinion shaft bearings while I'm in there instead of splitting case. The primary side is open as well. Better to be safe than sorry. Also will the new cam make any difference on the size if this is possible? You recommend checking or changing anything else? Thanks