Issue description:
When using the builder to copy a structure (using a space chamber card) the stairs are not properly rotated, and instead keep their original rotation, For many decorative building structures, this can be quite the hassle.

Steps to reproduce:
- Create structure (containing stairs) inside of space chamber.
- Link chamber to card.
- Place builder, insert card, and set builder to Copy.
- Rotate structure in builder using the horizontal rotation button (any angle but 0° will do).
- Run builder as normal. The stairs will be in their original rotation (not correctly relative to the builder's angle).

Versions:

• Minecraft: 1.12.2
• Forge: 14.23.5.2854
• CompatLayer (only if on Minecraft 1.10 or 1.11):
• McJtyLib: 3.5.4
• RFTools: 7.73

Possibly incompatible mods and versions:
- Optifine: HD_U_F5
- BetterFPS: 1.4.8

Relevant logs, if any: