Success! I used my 12" adjustable wrench to turn my allen wrench, and the bolts came right out (amazing what a bit of leverage will do). I followed the instructions, one side at a time, and it went on great. I tightened everything down (sorry, no torque wrench--just the same way I got the bolts off) including using the blue locktite.
I feel a little vibration, but I think that's my imagination after reading about a few complaints. What little vibration I felt could have been there before I mounted the bars--it's not like I've had a lot of recent riding time here in Minnesota to make a valid comparison.
Thanks for your suggestions and moral support!