Try a different chassis (8x) or haul a lighter trailer.

No possibility to change something in data to add weight on a front of the truck? BTW if you are actually the guy who created Best Mode ever I have to say thank you. I am a huge fan.

You could add more weight to the front axle by editing the corresponding chassis definition. However, it is not recommended to edit any Workshop mods, but instead make an addon for yourself only including the edited file(s) with the correct folder structure and place it in your mod folder. Just make sure to have the addon higher in the Mod Manager active mods list than the main mod.

The 8x and 10x chassis have had issues for a long time already. I'll try to fix them at some point.

Still waiting for the fix...

Same...

But its still the greatest mod ever.