My original rods were really rough and marked my B series sail the first time I flew it. I fitted clear protective tape but hated the look and it attracted grit on the edges.
I sat watching the TV in my shed and sanded both sets of rods that come with it with 400 grit wet/dry sandpaper done wet and when completely dry sprayed them with a cheap clear coat from a rattle can.
I did leave the area covered by the sticker as that was protecting the sail in that area anyway.
They are now completely smooth and cause no wear at all. Incidentally they are no heavier either.