Club car stops at full throttle
 

I have a 94 club car electric that I recently installed a 6" a-arm lift kit on and 22" tires. My problem is that it drives good and throttle works good but as soon as the pedal hits the floor board the golf cart stops but when I let off the throttle it starts moving again. This did not happen prior to installing the lift kit. Before the lift it ran perfect. Any help would be appreciated. O and it's a 36v cart.