Sharkline Navigator pool creaking / 24’ round brand new install

I’ve been told this is a rare occurrence but I am getting no where in how to make the noise stop. It is happening in or near one of the support legs. I have a video of it but don’t know how to upload it to this forum.  I’ve reached out to pool store, the installer, and the manufacturer. The first two say it’s “normal” and the last hasn’t gotten back to me, yet. 
does anyone know how to make it stop? It makes the noise with minimal movement in pool by swimmers.