well, i got the floyd rose original and I was looking online and they told me i have to cut off the ball end.... is this true??

yes i used search bar.

and also, if i got a locking nut and i cut the strings at the neck, would that change the tension on the parts of the string you play on or would it just pop it out? (just curious)
Shred Head
All that theory my guitar teacher tries to drill into my head just gets buried under piles of porn and I never manage to apply any of it