Okant... first off, unscrew the 2 screws on the
trem block, remove the clamp and you will see that there are 5 holes for springs to hook onto (3 used by the original springs). I hate to say this but DUH!!! didn't you notice that the 3 original springs went below the clamp, under the part that screwed on? *:sarcasm:
BTW why do you think you need 5 springs? What string gauge are you using? 5 springs will really make the trem feel really still and if you use light
gauge strings, your trem angle will most likely be wrong.