I was thinking of making some upgrades to my SX 5 String, swapping in some better Pickups and changing the strings was all I had planned. Question though... How difficult is it to change the pickups? Is it just a matter of buying new ones, removing the old ones and replacing them(are the internal electronics real complicated?). The string change I can handle but the pickups frighten me somewhat so any thoughts/advice would be appreciated. Thanks.