Another thing that should be mentioned is that glest is bad with rotating round objects, so you should make it rotated in small amounts, such as 18 degree increasements (19 frames for 360). Why 19 instead of 20? Because like John mentioned, you need to cut out the last frame, since it is the same as the first frame, and would otherwise cause you to be in that position for longer than the other positions, making it appear to slow down.