I am working on [this project](http://htmlpreview.github.io/?https://rawgit.com/IvanCoronado/running-statistics-from-Barcelona/master/dist/index.html#/). I am overwritting defaults markers with labelClass. CSS is working fine but i am getting markers duplicated.  I have just 6 markers but if u check the console i am getting 12 markers, also one of them is getting 0.1 opacity without any reason. The code is [here](https://github.com/IvanCoronado/running-statistics-from-Barcelona) and [this link](http://stackoverflow.com/questions/22202569/google-map-api-multiple-icons-in-wrong-spot) could be usefull.
I am working on this project.
I am overwritting defaults markers with labelClass. CSS is working fine but i am getting markers duplicated.

I have just 6 markers but if u check the console i am getting 12 markers, also one of them is getting 0.1 opacity without any reason.
The code is here and this link could be usefull.