Since these seems urgent and I'm not driving I can tell you 1 stage. The change overs were quick. Red Fang 20 mins, Kylesa 30 mins, Crowbar 30 mins, St. Vitus 40 mins, Helmet 60 mins but they might have been longer. I was nervous but it was very smoothly run. Very impressed. I'm positive of the set lengths read it by the sound Guy.