hello i got a smartechracing monster truck i thing it is a nockoff of the tmaxx 1/10 scale it is a couple of years old. i can,t get good distance with it before it goes out of control. i have put new cystels 29MHz new Ariel new battery's in car and control. all the servos and 27MHz am receiver and control is smartech i,m only getting about 25 to 30 foot at the max any ideas y or wait to do to get better coverage