[solved]tractor turned off accelerates

[RB Modding]

Hi, I am working on a tractor and when I attach a ballast to the front lift and a plow to the rear lift, the tractor starts to accelerate at very low speed, causing it to move even when turned off, while if I detach one of the implements becomes fixed. thank you anyone can lend me !!!

[RB Modding]

I write the solution for those with the same problem
the problem was two collisions placed in the front lift that followed the animation. even if they didn't collide with each other or with other collisions they were annoying to the mod