As a followup to Q&A 1593 (https://www.robotevents.com/VEXU/2023-2024/QA/1593) Further extents to the ruling could be asked in regards to U channel and C channel.
Should U channel and C channel which can be made as a modification to square hollow section and rectangular hollow section be allowed within the raw stock options. If not what documentation is sufficient to prove that U channel and C channel was created from legal raw stock e.g hollow tube.
Thanks