Issue description:

Whenever i try to automate making silicon in a sag mill, it makes around half, and stops.

What happens:

i try to make 64 silicon with a sag mill, and it stops with 28 left.

What you expected to happen:

I get 64 silicon

Steps to reproduce:

1.get on craft of the titans modpack.
2.set up automation with a sag mill
3.try to make silicon
...

Version (make sure you are on the latest version before reporting):

• Minecraft:1.10.2
• Forge:forge 8.0.99.99
• Refined Storage:refinedstorage-1.2.26ho

Does this issue occur on a server? [yes/no]
Yes

If a (crash)log is relevant for this issue, link it here:

[pastebin/gist/etc link here]