[Oldsguy]

Is the tension too loose on the clips? That is the only think I could think that would keep them from staying on. You should be able to re-tension them a little with a small screwdriver, just bend them back into place a little. They can be a little difficult to place back on, each one needs a little different "ommph". Be sure that the ring is properly positioned too, you can tell by looking from the back side of the wheel, sometimes just a move left or right a few millimeters does it.