There are some objet, i.e. [balance~] for this?

If not are such objet:
I am trying do with this patch, but allways remains a residual value.

[number] between (-100, 100)
|
[pack 0 200]
|
[line]
|
[moses 0]
| |
[number] [number] <---here remains the residual value!

Thanks!

Here's the balance I use for my patches

http://www.pdpatchrepo.info/hurleur/balance.pd