The volume and tone pots of my SG 61 RI are getting more and more scratchy. I will try contact spray, although I've heard that contact spray will solve the problem only temporarily and the scratchy noise will reappear after a while (often worse than before). If that is the case, I guess I'll have to replace the pots. Now, the thing is the tone of my SG is absolutely perfect and I don't want to change a thing. If I do have to change the pots I need to have exactly the same again. So I need to know exactly what value (300 or 500k?) the two volume and the two tone pots have in the SG 61 reissue. What type or make are the pots? Please let me know, thanks.