slowly im ironing out the wrinkles in my new bike. now its the front brakes. i havent checked high speed braking, but i know in low speed braking, my brakes pulse like they grab and then slip and repeat. i did a google search on it cause i suspected warped rotors, but i found it could be heat spots too. i assume the best way about this is to just replace the rotors? do i need to do anything with the pads? any recommendations on where to get parts? my rear brake seems to work just dandy.