The birfields bind when the ARB (or any front third)is spooled or welded. Not being able to turn because of that is normal. Your stock steering box is not strong enough to turn the binding birf's. I know because i asked the same question when my front diff was welded. Now I have an ARB too. just turn it off if you wanna turn, sometimes you have to roll around a bit after unlocked the diff to get the birf's to unbind. One thing you could do is add Hydro Assist the ram should be strong enough to turn even with the ARB locked. That is what im workin on right now.
