Here is the stock after an extensive and deep cleaning.
The method I used is similar to the one descirbed on DC's website.
You can see the dramatic change once all the oil is out of the wood.
The extensive damage to the upper HG is very evident once eveything is clean.
I thought I may be able to save this piece, but is was too badly damaged and needed to be replaced.
I was able to get another used upper from DC for the set.