Im rebuilding a G16e and can't understand why this cart is being a PITA!! When I press the accelerator, it doesn't move foraward until i've pressed it almost all the way to the floor. And when it goes....it explodes forward at one speed...same in reverse....WTH?? Solenoid...Throttle sensor, stop/go switch, all batteries, controller, ....everything is new on this cart.....could I have miswired something? Anyone have any info on why????