can anyone shed some light as to how much you can load on a 3 axle flat or step? I know theres more than one factor but lets say for reg tandem axle truck and trailer its 12,000 - 34,000 and 34,000 and 80,000 or under .for a 3 axle is it 12,000 - 34,000 and 60,000 (20,000 per axle ) ? i would...