I redid some of the Bulgy handguards that I bought. I bleached the wood and applied 4 coats of Tung Oil on the lower HG. I then put about 4 coats of shellac on top. The color of the HG is lighter than the top HG and the stock. I was thinking of removing the shellac with denatured alcohol and also removing the tung oil. I was also thinking of putting some Tru Oil on the lower HG to darken it a bit and better match the upper HG. What's the best way to remove the tung oil and shellac? Thanks.