remove unused levels, add notchedEnds to more levels

![image](https://cloud.githubusercontent.com/assets/1767466/2949503/9d393b92-da0f-11e3-8f75-9aad565bf9b4.png)
 instead of
![image](https://cloud.githubusercontent.com/assets/1767466/2949520/b2b3878e-da0f-11e3-979e-0fd934e3eef1.png)