Guys,just tinkering on the engine while I'm waiting for my bodywork to come back from the painters and I was looking at the output shaft with the sprocket,a 520 type,and noticed once the sprocket is on there isn't enough shaft protruding through the sprocket to accommodate the lock tab/washer...sure I have plenty of thread for the nut but I would've expected at least a mm or two to sit the washer on or will the shaft 'pull through' once I start tightening the nut???Cheers.