Futaba Controller and Mini-inferno problem

Dear Brothers,

My friends have given me a new Futaba 2PL as a gift. I have a non-modified mini-inferno. All electronic equipments (servo+ receiver/esc combine unit) are the orginal Kyosho ones. When I use my new Futaba 2PL to control this mini-inferno, the steering servo vibrates seriously when making a left turn or making a brake. The car seems out of control under such circustances and moves forward and backward.

This problem appears only if using this new Futaba 2PL. The mini-inferno is normal when using other controllers.

I also check the function of this new Futaba 2PL is normal. When it control other cars, it is ok.

I don't know why it happen. Who can help me? Thanks for your advices in advance.

Rgds,

Ryan