Crease Tool problem when zoomed in

I have been trying to make the vertical lines on the lips of a model with the crease tool and it seems to only work when zoomed way out, too far away to place the lines. If i zoom in then it wont make any creases when radius is small. If i increase the radius then it just take out chunks, not lines. I have subdivided mesh many times to see if that helps and it doesnt. I have seen this done in tutorial with zbrush and think blender should be able to do it as well, but it cant. Anyone have a solution?

No demo blend file supplied for review
No screenshots to show what the problem is
Vague description that tell us almost nothing

We cannot read your mind, supply proper amount of info.

Also post in the appropriate forum, the Tutorials forums is for COMPLETED tutorials ONLY. Thread moved