Iv dont a couple of track days, my first with standard discs and pads, and one where I thought my new DBA discs and DS2500 set up was crap. I got the disks skimmed by Disc Skimmers on the forum, and was amazed at the difference. Brakes felt like id expected them to,incredible. If your discs are not warped, id be amazed, as if the calipers are getting that hot, then the disc must be too. Iv only ever done one cool down lap on my track days, as I thought that was all that was needed to be honest, and mine have never had smoke billowing out of them or the calipers changing colour.
Id contact Disc skimmers and see if they can help you out.