drawing using symmetry tool in topology

[system]

Is there something wrong with the symmetry or is there a way to setup how your symmetry is while editing the topology of your character? I keep on getting this weird jagged edge when I use symmetry. I always erase what I am doing and just draw without using it. I am using my mouse when doing this.

forgot to mention I am using Zbrush R3 for the PC.

Attachments

[Kerwin]

The underlying mesh when drawing needs to perfectly symmetical. Try running smart re-sym on it before using retopo tools.

[system]

The underlying mesh when drawing needs to perfectly symmetical. Try running smart re-sym on it before using retopo tools.

thanks I will try that trick.