The unit appears to be made of cast steel. The top part of the pass. side was pushed in and it twisted. Any ideas on how to get it back into shape without breaking it? Heat? C-clamps and shims and hope for the best? Also, does anyone know how the side rollers are held in place? The top and bottom rollers are greasable and spin freely, but the side rollers are rusted solid. I don't want to just start beating on it if there's "a way". It would be nice to get this thing apart to clean it if possible.