Deb,Are you sure they would be sticky enough for the track day?
I'm slowly grinding down my pipes and the nub on my kickstand is about 2/3 gone...thats with a 160 pilot road in the back and a pilot sport in the front. I've got 4000 miles on the rear and it's a tiny bit square but nothing too bad. If I was doing a track day...pilot sports or see if the new pilot powers are out yet.I strongly suspect that it's possible to drag hardware on a 620 with Pilot Roads. Should be fine for a track day.