The Richards Microfit stock that I am presently working on has the While Line at the fore-end Rosewood cap and the Rosewood Grip cap. My problem is that after I started sanding this stock the White Line has become discolored in spots and I cannot seem to remove this. Anyone with suggestions? I have tried sanding in just the direction of the Rosewood and also sanding and wiping with fresh Tru Oil to no avail!