I am creating a four poster bed for an 1800s modeling assignment, i designed the posts and smoothed them out by pressing '3' on the keyboard, every time i rendered the bed the posts were always smooth but when i was creating a bedside table i combined a hard surface and smooth legs and now every time i render my bed frame the posts are all hard and jagged and no longer smooth. they are smooth when i work on them in the main maya screen yet when i render they are hard, does anyone know how to fix this, i spent a lot of time on this and i don't want to make the posts again, any help would be grateful.