You can't change the temp settings on the Copperhead, you really control it by how much punch and motor timing you add. start little low and adjust from there.

At the SC Nats we ran Profile 5 straight, that was a 1/8 style track, if yours is smaller, lower timing and punch will help.

BTW, I actually bought a small portable hard drive case at Staples, and I carry my Progauge and temp gun in it (I use the little Duratrax temp gun).