I have just put a 7inch lift kit and 35s on my gq patrol and ive taken it out for a test and when i put it in 4x4 (manuel lockin hubs) my front tyres are not spinning pnly my back ones are so i have no 4x4. theres a grinding clonking sound thats sounds like it coming from the front of the car when i try driving it in 4x4. i think my diffs gone but i want to be sure