[Pen loosing opacity]

Hi Gdenby, 

Thank you so much, cleared a lot up. 

[Pen loosing opacity]

Thank you for getting back so quick!

Sorry I'm new to the software, is there a way to go back to the original opacity? or to erase the vector curves without it changing? 

 

Thanks so much. 

[Pen loosing opacity]

Hi, after using the eraser tool the pen loses opacity and goes blurry around the edges.

Any help is appreciated thanks!