Fifth wheel relocation for traction.

[Cooper]

Hey guys, I have my day cab Aeromax that I'm using for a heavy hauler. Problem I'm running into is weight distribution. When the lowboy is loaded running on concrete the truck doesn't want to turn. I have the rear most axle locked for running on dirt. I want to keep it locked. I have read somewhere that some have moved the fifth wheel forward. That's what I want to do. I just don't know how far, 1/4" , center it over axles, or just forward of center? Battery is 5000mah under hood and front tires are filled with bb's. I do have a set of locking axles but really didn't want to use them on this if I can help it. That's why I was wondering about getting some weight farther forward. Lowboy is hauling 60+ # excavator. Truck suspension has been upgraded. High turn motor. That's stock tranny for now, upgrades in the works, or when she lets go .