Rods ordered via Amazon, the local H D had a couple of non-galvanized rods that were pre-bent... I had some trouble finding stainless in the desired length, so I thought I would give these a try...What are the black, partially threaded rods you are using?
https://www.amazon.com/gp/product/B003MW0DXC/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1