	preston corp ptrk sees first quarter loss preston corp said it expects to report a loss of about dlrs or five cts per share for the first quarter compared with a profit of dlrs or cts per share a year before the trucking company attributed the loss to the continued rate of discounted in its primary markets flat revenues and increased costs including uninsured claims expense resulting from adverse weather conditions during the last three months it said results outside the northeast were strong and it expects to show improved results for the rest of the year reuter 
