Positioning a scalable textures

I've got a texture that is being scaled through code, it works as a health bar. The problem is that while it works, it's off the needed location a bit. No matter how I change the numbers the problem is still there or the texture is being cropped at both ends.

GUI.BeginGroup(new Rect(0,0, 360*changedHealth/100f, 105)); GUI.DrawTexture(new Rect(0,0, 360, 105), mainTexture, ScaleMode.ScaleAndCrop); GUI.EndGroup();