Nick, if there is any rust at all in the discharge chute and the throat area leading to the discharge chute it will easily plug up. I make sure that area on my QA42 is kept rust free. To further prevent plugging I paint it with graphite paint which makes the surface really slippery. If you have a farm supply store nearby they should carry it. It is available in brush on and spray on. The brush on type has a higher graphite content so I recommend getting that but it's nice to have a spray can on hand for quick touch ups as it is a wearable surface coating. I keep both types on hand. One brand name is Slip-Plate.