Originally Posted by Xobim

...Funny thing is, that when you combine the wieghts of Faw, Shuri, Araches, Leetzan and the foocanoe that you get 400. Now, because Fooruman has negative weight, he can counterbalance the weight of Uberbob.

So: weigh Uberbob and Fooruman at the same time to see what the negative weight of Fooruman is. Then follow the command in the above post.