According to the pilot, he was returning to his home airport after purchasing the accident airplane, but prior to returning home, the pilot had received a two hour checkout in the airplane. Upon arrival, the weather had deteriorated, rain made it hard to see and the wind was gusting. The pilot reported that he had to go around during the first landing due to the wind. He reported that during the second landing he undercompensated for the wind and the airplane landed hard, bounced and touched down again off the left side of the runway. The airplane sustained substantial damage to the fuselage. The pilot reported that during both approaches he had trouble manipulating the throttle; it appeared to stick and unstick at times making engine performance and power application erratic, resulting in an unstabilized approach, and compensation for the gusting wind difficult. The wind at the airport at the time of the accident was reported as 310 degrees true, 18 knots, with gusts to 35 knots. The pilot landed runway 24, and reported that he should have chosen another airport with a crosswind runway. Further, following the accident, the pilot realized that he was not familiar enough with the airplane's Vernier type throttle, as his past experience was with a lever type throttle. An FAA inspector who examined the airplane after the accident reported that the Vernier throttle operated normally.