As the cold season starts (in some places) it's time to tighten up all the hardware bolts, nuts and screws on the dishes guys.
The heat of the summer will expand the metal hardware, this can cause some bolts to stretch, the cold will cause other parts to contract, this can cause the dish to droop, or even move out of alignment in a strong wind.
But be careful Kids, if the bolt/nut looks rusted it could break or in some cases if the hardware is stainless steel gall up,(weld together internally to each other) this will cause severe hair loss as you try to tighten up the bolt/nut, it will be non removable, and would have to be cut off and replaced.
All stainless steel bolts and nuts should have been put together with an anti-galling compound at first, this helps remove or re-tighten the stainless steel hardware.