Removing the notch or re-stake the hub does not mean cut it off. You simply pop it up in order for it to unlock then re-stake it back to lock.

And yes, you should not be turning your rotors often. :nono:

Wobbling??? :huh: You might have another problem there. Normally a warped rotor will make screeching brake noise, not so much wobbling that you can actually feel it.

Try jacking up your front wheels and put your trans to neutral. Remove the wheels/tires and hand spin each rotor, you should be able to see from its rotation if it's warped.