Okay, I took off work a little early yesterday and worked on the car. The first time, I loosend the cam sprockets, set the tension, and then retightened the cam sprockets. Then I turned the crank through a few turns, and wouldn't you know it I had slack between the two sprockets. I started thinking I might have to use washers to lift the timing belt cover (suggested above), but I decided to try to tension the belt one last time. The second time I was really careful not to let the sprocket turn as I tightened the sprocket bolt. Not sure if this was the trick or I just got lucky, but the belt is nice and tight all the way around - no more slack between the sprockets. I put everything back together and took it for a drive. Sounds great! Runs great! No tapping. Let's see if it still sounds this good in a couple months.
