I ran four runs in the morning, Spun on the first one(kept my foot down and did a 360) but got more used to it each run. I had a few technical difficulties. I did not realize till about the third run that the fan belt was slipping, causing smoke (!) out the air intake and the engine to go flat at about 4k rpm. No alternator = no spark! I planned on adjusting the belt after my work assignment in the afternoon.