I swapped my Custom 5 to the inverted black allen screws on the screw side and WOW! What a great difference--it was like...almost a FS! I made a deal with Humangulangar to trade my C5 for his FS--I cant wait to get it in!!
The best I could describe it: Like an old PAF with a age-weakened magnet with a high output top end that is really sweet and just wants to scream harmonics. Does sweet, bright chords wonderfully. Very open sounding. This pickup allows your fingers to pull the tone out which is exactly what i wanted! Great pickup--cant wait to try the real deal!