Looking at an 08 Mack Pinnacle that was a former oil field winch truck now converted to a dump truck. It has 44000 lb rears with a lift axle (3 axles total in the rear). Double frame, heavy spec truck. My question is the 13000 lb front axle a problem for a dump truck? Under certain loaded conditions with that front axle would I be in violation of some DOT rule? I have always struggled to understand the over axle weight violations/bridging rules and don't want to buy a truck that will cause me headaches. Thanks for your time.