Clock watchers prepare to spring forward 04/06/2002 By DAVID FLICK / The Dallas Morning News Jim Thrash prepares for daylight-savings time .(IRWIN THOMPSON / DMN) Every year, daylight-saving time comes around like clockwork, and it complicates Jim Thrash's life. At 2 a.m. Sunday, local time will officially spring forward one hour. On Monday morning, Mr. Thrash and two other employees at the Tic Toc Clock Shop in the White Rock area then face the task of updating the store's merchandise. That means pushing ahead the minute hands of each of the store's 100 or so timepieces, pausing at the...