zbrush mirror problem

I'm using the standard tool with X and M (deform in the x and mirror ) but the farther the points get from each other the less mirror i'm getting on the mesh - any ideas?

You mean only x?
Because x is symmetry on x-axis

Right - but i want the mirror in the x
Thats why i'm using it...
So it mirrors fine when the points are close from each other but as they go more far from each, the mirror becomes less and less noticeable
To the point there is no more mirror

Hmm sounds strange
Maybe you shifted it a bit
The model by accident
Are you sure its really getting the corresponding verts in the middle ?

Yes
Works fine closer to the middle

Probably because you messed with the symmetry
Zbrush symmetry, is approximation
I mean they look on points in space
You would have to resym it
If the left side is somehow a bit off
It can lead to misbehaviour
Rather try smartresym and mask the side you dont want to be altered
You might still get a crease in the middle

Damn smartresym take for ever :(
Is it normal?

Yeah it does
Don't worry, it will feel great, when the pain has gone, though.