A jury found John E. Kautz guilty of vehicular manslaughter today. The 40-year-old Preston man was involved in a crash that killed 13-year-old Andy Zapolski last October.The two were driving go-carts when Kautz, whose blood alcohol level was nearly double the legal amount, rear-ended Zapolski when he slowed down. The impact caused the teens’ vehicle to roll causing him severe head trauma.He died three days later.Kautz has been fined $1,000 and must pay for funeral expenses and victims compensation for Zapolski. He could face up to 10 years in prison.