Grinding brakes after hard track session?

Wondering if any of you guys/gals have run into this before. My last track day/last session I was going a lot faster than I have before (woo progress). Got off the track and noticed cruising through the pits that my front brakes were a lot more "grindy". I thought maybe because they were a lot hotter than normal and they would normalize when they cooled down.Well, fast forward a few months and they still feel the same exact way. What could it be? Pad deposits? Warped rotors?Bike is a 2012 ZX10R, pads are Galfer Sintered, stock rotors.Before you yell at me, I did some searching and couldn't find much specifically related to my situation so here I am. via /r/Trackdays https://www.reddit.com/r/Trackdays/comments/a987r7/grinding_brakes_after_hard_track_session/?utm_source=ifttt