If you sew, or aspire to sew, you surely have questions about that most important piece of hardware—the sewing machine. Perhaps you're in the market for a new one, want to maintain your current one, or wonder whether it's worth fixing Grandma's hand-me-down? Christine gets the answers from Harvey Federman, master sewing machine repairman and owner of Sew Right, a sewing machine and quilting shop in Bayside, Queens.