A nozzle positioning assembly includes a first support shaft, a second support shaft, a first position adjustment assembly, a second position adjustment assembly, and a hub. The first and second support shafts have respective bodies with a center aperture, a spherical first end, and a second end opposite the spherical first end. The first and second position adjustment assembly include first and second link mounting ears positioned circumferentially from one another. The first position adjustment assembly is adapted to be affixed to the second end of the first support shaft and the second position adjustment assembly is adapted to be affixed to the second end of the second support shaft. The hub has a first end configured to receive and rotatably retain the spherical first end of the first support shaft, and a second end configured to receive and rotatably retain the spherical first end of the second support shaft.