You put the locker block in that genesis? you wont get wheelies without it in the center diff, when you go to take off full throttle the front lifts off the ground alittle and the center diff spider gears redirects powers from the wheels with most grip to the wheels with the least grip. ( back to front), i cant see how its not pulling wheelies, its very cold where i live so im running it a bit rich until the weather warms up and it can easily pull the front wheels off the ground when the locker block is installed.