[Talan Va'lash]

The real answer:

1 - fill the 3 from the 8 - 3: 3lbs, 5: 0lbs, 8: 5lbs
2 - dump the 3 into the 5 - 3: 0lbs, 5: 3lbs, 8: 5lbs
3 - fill the 3 from the 8 - 3: 3lbs, 5: 3lbs, 8: 2lbs
4 - dump the 3 into the 5 - 3: 1lb, 5: 5lbs, 8: 2lbs
5 - dump the 5 into the 8 - 3: 1lb, 5: 0lbs, 8: 7lbs
6 - dump the 3 into the 5 - 3: 0lb, 5: 1lbs, 8: 7lbs
7 - fill the 3 from the 8 - 3: 3lbs, 5: 1lbs, 8: 4lbs
8 - dump the 3 into the 5 - 3: 0lb, 5: 4lbs, 8: 4lbs
9 - Place the 5 and the 8 on the plates
10 - I win!