OK I put the hubs on this morning with the following: it took me 30 min to jack up the Roxor and pull the dust covers off (PITA) Conclusion: if I were a flat rate mechanic, I would starve. But, the hubs were well worth the money and effort. I had no problems at all running 4 lo with hubs unlocked. My take away; pull the wheels, remove the hub bolts, and use a sturdy flat bar to access the flange, use whatever combination of bad words that seems appropriate, and the second hub is easier than the first.