I have been running it in the 2WD mode since I posted this thread (4 months near 2000 miles). I also installed manual hubs and have them unlocked. As of now I have had no ill effects. However I have seen no gains in mileage ether. The only advantage I can see to having it in 2wd and unlocked hubs is less ware and tare on front driveline parts. But I can do some mean doughnuts in the dirt, that’s gota be worth something. The mod just gives me more options.

Phil