TIFFIN, Ohio — Troopers screened 1,086 drivers for signs of impairment at an OVI checkpoint on West Market Street on Friday night and made no arrests inside the checkpoint zone, the Ohio State Highway Patrol said. One vehicle was diverted during the two-hour operation, according to the Patrol. The release does not say why. The checkpoint ran from 7 to 9 p.m. near the intersection of South Shaffer Park Drive, with the Patrol working alongside the…