Pan cars are the only racing chassis I know in any class of motor racing that has a hinge in the middle. Because of that, most, if not all, the Rules from any other class of model, or full-size, racing do not apply directly.

We usually ask for set-ups, not for cures to handling problems. If you ask for a cure to a problem, as you did here, then it comes as a surprise when you get the answer! That's because the chassis has a hinge in the middle!! HTH