I have a St. Croix Afton Bay pellet stove that I need to remove /replace the rear shaft bronze bushing . The Versa Grate shaft goes through this bushing....Its the one seen in the firebox when the shaker tray & firebox are remove . This is a "Hat Style " or bushing with a lip on one side towards the back of the stove. Has anyone replaced this before ? All advice Greatly appreciated .....