Skyline_UK

I just bought a Cort G290 FAT in Blueburst and am very pleased with it. Amazing value for money in terms of materials and build. There's just one thing I don't like about it. It has two humbuckers and a five-position pickup selector switch; positions 1, 3 and 5 being the usual neck, both and bridge selections, with 2 and 4 being inside single coils and outer. But positions 2 and 4 are about 30-40% quieter than the humbucking positions. Switching mid-song between humbucker and single coil is not going to be a feasible option unless I use a volume booster on my pedalboard; a pain. NB: There are only two knobs, overall tone and overall volume. Is there a way to tweak/augment the wiring to equalise the volumes? I'm not a fettler and leave my guitars alone in terms of delving below the covers.... I've uploaded a PDF of the guitar's schematic from the Cort web site. Thanks! G290FAT_Schematic.pdf