I apologize in advance for my English. I have a sg custom with 3 humbuckers, and I changed the two potentiometers for the tone with two push / pull. which give me together with 3-way switch all the 7 possible combinations. now I want to have the possibility to choose between series / parallel for each humbucker, and since I understood it I need 3 push / pull. I only have 2 pot. available for the volume. therefore the modification excludes one of the three HB. (and I don't want to open holes in the guitar). according to you for which of the three it makes sense to leave it in serie and bring the series / parallel changes to the other two ?