Argee is spot on, but I would add some thing. First if you never plowed with a small tractor before, be sure to push the piles WAY back the first few times. Once the piles are there, your not moving them. Next, you will find with the blade angled, and heavy snow, the tractor will want to be pushed to the side wile you are plowing. Not much you can do about that, except add weight to the front, but can't add to much to L&G stuff.
Heres an idea for you. Any way to add more holes to the angle plate on your blade? My Case blades have 5 holes, and I almost never use the full tilt hole.[around 45deg] Seems the mid way holes work the best for all around use.