I tried to reproduce the issue you have encountered, but to no avail. You can find my test project attached. Please compare it with your actual project and check if there are differences in the implementation.
You can also verify if any of the listed scenarios, that can lead to such problem, are present:
1. The ItemCount
property of RadRating is specified in the code-behind as well. The new value will override the one set in the design-time.
2. There are custom CSS styles, modifying the appearance of the RadRating, for example setting less width than needed.
3. The RadRating is bound to a data source, which specifies different number of items than the ItemCount
Please note that at the current state of affairs I am mostly guessing as to what your setup is and if you are still experiencing difficulties please prepare and send us a sample, runnable project that displays your issue
so that we can examine it locally and provide a more to the point answer.
the Telerik team