An interesting tidbit is that when single bucking, a properly sharpened peg and raker saw will cut a little to the left as it cuts down through the log. This is because the cutter directly in front of the raker is almost always on the left side and when single bucking there is more down pressure on the push stroke then on the pull stroke. This cutting to the left is not normally enough to cause a problem but a sawyer or filer should not be concerned if they see that. It is normal and there is nothing wrong with the saw.

For a similar reason you will start to see whiskers on one side of the noodle before seeing whiskers on both sides of the noodle. That is normal and just the nature of the beast.