I had a center diff lock issue few weeks back: after self-recovery the center diff lock remained locked and would not unlock, causing heavy steering when driving home. My mechanic was trying to solve the center diff problem by isolation: whether it was mechanical (possible fix: change center diff lock actuator), or was it electrical (possible fix: clean dirty connections). While he was doing that, I was reading the materials from my Land Cruiser Repair Manuals and some other sources. Thought I'd