There is not a lot of difference between Mk2 and Mk3, but Mk3 has been fine tuned and runs more quietly, smoothly and has a faster turn of speed at full power - it is running at low speed here. The feed tower is more robust and the original input gear to the drive at the top has been reduced from a bulky 2 1/2" Gear to a neat 1/2" Pinion, which I like much better.

All videos have been made outdoors, hence the bird accompaniment!