I thought there should be 2, but mine has only 1. As soon as I got the shaft and the head lined up, I put the first one in, and expected to see the other one on the other side. Not there. I had removed the lower 2 screws, and there were no holes there either. So far, it's good. I don't think the upper one was in in the first place. I am getting better flying this thing, I can now do right and left circles and right and left squares, 360's in both directions, and I now have spent some time flying X's crossing in front of me and flying straight at me (that's the toughest for me) along with halting forward movement and hovering at random points in between. Now that the shaft isn't creeping, all my stick adjustments are holding and the yaw problem isn't that tough to deal with. I do notice doing 360's that one direction it will spin much faster than the other, left turns require more stick than right. Again, no huge deal, I am getting the majority of the controls down. [8D]