# FAQ & Trouble Shooting

<mark style="color:blue;">Q: How square do the tubes need to be?</mark>&#x20;

A: They don’t need to be perfectly square, but we recommend making sure they are as SQUARE as possible. Use a metal chop saw or mill to cut these tubes.

<mark style="color:blue;">Q: What tubing can be used?</mark>

A: Any 2"x1" material can be used. The kit is designed to use 1/16" wall material. If other material is used, different sleeves may be needed to adapt to that wall thickness.