Okay, first a little background. This is a '92 FJ80. I just changed the front ujoints on it not long ago. Recently I have been noticing an intermittent problem with the drivetrain acting like it is binding. It acts like the emergency brake is on just a little bit or it's in 4lo with the center diff lock activated. I have solved this problem temporarily a few times by throwing it into 4lo and locking the center diff (7 pin mod) and driving around a bit. That seems to make the problem go away temporarily. So, now for a background on things that have recently gone a little less than ideal. First, when I changed my front ujoints I was an idiot and forgot to mark the driveline and drive flange with match marks so I have no idea if I put it back the way it came off. I am not noticing any bad vibes at higher speeds, though. Second, while the front driveline was off I just assumed, like any 4wd vehicle, that I could drive it without the front driveline. I could hear things whirring (transmission?) and then growling when I would put it back into park. Apparently you can't drive the cruiser w/o the front driveline (why?). All I can think is something to do with the AWD system (viscous coupler, miscellaneous other stuff maybe)? The last recent mishap I had was leaving my headlights on too long and killing my battery. The problem with the binding issue has only manifested itself since then but I cannot for the life of me imagine how that could be related to the battery. Any help would be GREATLY appreciated. Thank you in advance.