Rob, I have had the exact same issue on my 2019 hot springs vangard. When new one of the dual moto massage jets broke in the exact same spot six months later. Today my other side of the tub now has the same problem two years later. My hot springs dealer said they never had these problems on the single jet systems, only on the dual jet systems. The dealers know more than they are letting on. Most won't care short-term because the 5 yr warranty covers this for new tub owners, but you are going to be on the hook every six months to a year down the road buying new $120 jets for this. We only use our tub 2-3 hours a week max. My dealer suggested binding the two together with something due to the stress going up and down in the water breaking that weak spot. I too use bromine w/ a ozone system instead of salt. My bromine level is between 1-3ppm.