> For the complete documentation index, see [llms.txt](https://docs.wcproducts.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wcproducts.com/welcome/shop-accessories/super-pit/assembly-instructions/single-upper-kit/steps-9-12.md).
# Steps 9-12
## Step 9
Place the assembled Single Upper Kit into the case, ensuring it sits square and aligned. Using a sharpie, mark all required hole locations that will need to be drilled out in the next step.
{% hint style="warning" %}
Do not drill out the holes in this step.
{% endhint %}
## Step 10
Remove the assembly from the case and drill the marked out holes. If any of the holes line up with any metal or handles we recommend not drilling those holes.
## Step 11
Take the assembled Single Upper Kit and set it back in the case in the same location that was used to mark the drilling locations in Step 9. Use #10-32 x 2" L bolts and #10-32 Nuts to bolt everything down. We recommend not tightening everything fully yet.
## Step 12
Install the rest of the bin rails and then tighten everything down.
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