People often take a few professional twists and turns before falling into a career that feels right, and Nevada City dentist Jasper Yai is a perfect example. After trying on various professional hats after graduating from college, Yai has settled into what he says is the perfect job in the perfect town. In January of 2011, Yai assumed day to day management of Dr. Greg Vixie's Nevada City dental practice, which was started by Vixie's father in 1966. Vixie, who has been practicing since 1990, still works two days a week with no plans to retire."I've found Jasper to be …