As long as the 14FF setup is like the 10 bolts, Gov-locks also don't lock under a certain RPM, and unlock over 20MPH or so (axle speed) so burnouts aren't a good indicator even if it IS working correctly. Chock the front tires in mud or grass, and slowly give it gas in 2wd. You should see the rears start turning together just after one tire starts to spin.