[UNCC_BRZ]

I just installed a new set of brake pads on Monday, Wearever Platinum. One side went on no problems, change done in 5 minutes. The other side took me about 30 minutes to convince the caliper to go back on over the new pads. Now I'm having some serious drag issues. I know that it's just the one side from the heat I can feel after I drive.
I'm 99.9% sure that the pads are just overly thick. I did not replace the rotors.

So what are my options? I dont have the old pads anymore.