Having watched your YouTube video of the Helm tent I can see one potential problem for you, which broke one segment of my pole. The solution is very easy.
My Zephyros One tent also requires a long pole to be pushed through a nylon sleeve. One end goes in an eyelet then the pole is held at the other end and then pushed into another eyelet which creates a curve along its whole length. In the YouTube video, the weather is dry so the blue pole slides easily in the nylon sleeve, the curve is created and then the other end is secured to the second eyelet.
My mistake was to try to erect my tent in exactly the same way when it was wet! I pushed the pole through the nylon sleeve and secured it to the first eyelet. I then attempted to put the other end in the second eyelet and didn't think about the curve at all, I just assumed it would slide easily like always. I then heard a CLICK and one section of the pole just snapped!
The snap occurred because I didn't realise at the time, that when wet the pole does not slide easily through the nylon tube! In damp or wet conditions the metal pole and the nylon sleeve can make each other stick together like glue which can stop the pole sliding through as it is supposed to. I've repaired my pole now and if its damp, wet or even dry I always ease the pole with my fingers fully into its curve BEFORE I fit it into the second eyelet.
Now that I know what happens I can now easily ensure that the pole does not snap again.