After years of planning, I finally built my woodworking bench. In the finishing process (blo/shellac/waterlox) I spilled half a bottle of garnet shellac on the MDF top! At that point, I was committed to putting the same finish on the MDF, and after 4 coats of shellac, i have a mottled, overlapped finish that looks like hell. Should I sand it off at this point or try to remove it with alcohol? All of the wood surfaces are fine, just the MDF is the problem.