Still sitting here with a phone in one hand and a credit card in the other, (not literally). Let me just throw a quick question into this, (again, talking about putting the lock-out on the left (driver's) side of the forward dual). Could one put a locking hub on the other side of the same axle as well? A lock-out hub on each side of the same axle. Now, the driver would have to lock/unlock two wheels on the same axle when needed. I'm a novice to diffs, but have a "basic" understanding. This still might qualify as a dumb question either way, but I have to ask. You guys know your stuff. I appreciate the education. Do have mercy if the answer is obvious or elementary.