underside deck rust
My push mower's underside deck is 6 yrs old and some paints are gone and has some rust.
Last year, I fixed my riding mower's underside deck. It had tons of rush. I sanded it, primed it with rust oleum(forgot the spelling), then finally painted it. However, after few uses, the paint started to peel again.
I would like to fix my push mower's underside deck but don't want to reimplement the steps I did last year.
How can I make it stronger? Also, how do we make the underside smoother so that grass clippings just bounces and not stick to the underside? I only mow when grass is dry.