Hi i have a mexi fat strat, and whenever i switch to the position closest to the neck( i assume that this is the neck pickup selected) i get absolutley nothing, but when i turn both tone pots all the way down, i get sound; when i switch back to the other 4 positions, they all sound muddy, but of course sound normal when i turn the tone pots back up. at first i thought it could be a bad switch, but after changing it the problem remains. What could be the problem?? could it be a bad neck pickup, or something else?? any help is appreciated!