dude, I've gone through heaps of these xs400's in milwaukee. must have been some top notch salesman in the day.
if you lock your bars...there's a second notch which leaves the rear tail light on. make sure you only turn the key to the LOCK position and not the one after it which I dont remember the label.
so thats prolly how your battery went dead. its probably not dead yet. just tired.
The Shop down on Greeley on the S Side is a good place. Tim has helped me with these bikes a few times. I just got a Duro front tire for $50. Even though they're tube tires, its much much easier to do this tire on a machine than by hand.
hey, if you have more ?'s email me
[email protected]
I might be at rockerbox next weekend.
andrew