OK, I've got a stacked pickup - I like the full on tone as a "boost" position, but it doesn't play well with the neck - and doesn't allow a twangy bridge pickup tone. It does these things well when split. I'm probably just being blind, but how would one wire a 4 switch to give. Neck Neck+Bridge(one coil) Bridge (one coil) Bridge (Both coils series) First 3 positions I can work out - almost regular tele wiring. but the forth position is eluding me.