ZBrushCentral

Insert Mesh Problem

Hey everyone.
I am using the insert mesh brush, And I am attempting to carve out pieces of a mesh. However the method is not working like I expected it to. The problem goes as follows

I can insert meshes fine.
Just mask out the area
Make the poly group
Insert mesh,
ctrl drag twice and voila

but when it comes to carving out a piece of the mesh with the insert mesh brush
(alt+drag) It looks like all the vertices get heavily distorted. (I’ll post an image so it’ll make sense)
Any clue as to why that’s happening?

http://imgur.com/a/c7sX4

Turn on dynamesh to substrct your insert mesh.