I cleaned the fretboard on my SR5 Saturday. I used Murphy's Oil Soap and a tooth brush. After, I oiled and waxed the neck according to the information in FAQs. The neck cleaned up really well, but I am starting to notice dirty spots showing up again. My hands are reasonably clean, but I do not wash them everytime before I play. Do the oil rubbed necks just get dirty really easy or is something going on with mine?