Precision Financial Services Inc., a Long Island-based mortgage company, joined the tenant roster at 6800 Jericho Turnpike in Syosset. The firm subleased the 14,228-square-foot space previously occupied by Century Business Services Inc. Precision Financial will be relocating its offices from 114 Old Country Road in Mineola, where it was leasing a smaller space. The move is part of an overall strategic expansion plan for Precision.