Overkill chart is not working properly anymore.

![image](https://user-images.githubusercontent.com/33700255/48349407-e533fe80-e68c-11e8-82ab-124a9ac9fd4a.png)
I portaled at 430 and chart shows 336.

_Originally posted by @sandertu in https://github.com/genbtc/AutoTrimps/issues/113#issuecomment-437874133_