This could be my issue as well. My pump and gear box are both original (+200k miles now). What are the details on your current setup? Do you have a build thread?I used to think the front locker restricted mobility more than the rear. That was when i was running a dying power steering pump and a stock box. When the front was locked it was very difficult to turn the steering wheel. Now that i have a proper power steering system, I cant even tell when the front is locked and i am turning the wheel.