You are all wrong.
Issue is, you are right hand dominant and pulling harder on one side than the other.
Also, try actually starting the saw.
If however you choose not to start the saw, some additional tips:
1. Use the brake to lock the chain. Aids in efficiency.
2. Turn the brake off to turn the chain to a new position if the teeth you are using get dull...
3.. If you get tired cutting on the pull stroke, flip the chain around and cut on the push stroke. Really saves the back!
4. Don't forget to rotate the chain every now and then to lubricate the teeth. Really helps with cutting the hardwoods!
5. Don't turn the chain too much though as a few rotations every hour or so is enough. Doing it too much is wasteful and you will find you are filling the bar oil once every two days as opposed to once a week as recommended.
6. As stated above, switch sides periodically. Uses different muscles, saving your energy and avoiding crooked cuts.
Hope this helps!