<Bump again.>

Okay, I've had a set of these on my winter commuter for 4 months now. I love the concept, but:

• My winter bike has a Nexus 7-speed internal hub, and I had to get a special bracket from the company to mount it. The company didn't have one on their website for a while, but then they did send me one free of charge for my trouble, so that was nice.
• But attaching it onto the rear axle seems to make getting the (non-QR, chain tensioner-less) wheel to sit right in the dropouts even more finicky than usual, and more prone to getting knocked out of alignment by bumps.
• The front one was great when I first got it, and it even stayed on at least 5 minutes after I stopped, longer than they even claim on the website! But lately, it hardly stays on for 30 seconds even after my usual 25 minute ride, and I haven't moved it around on the wheel at all. Is it possible for the capacitor to get burned out? (This is the SL120 model with a capacitor to allow it to blink steady, and stay on for a few minutes after stopping.) But it still blinks at a steady rate while I'm riding, so it can't be totally dead.

Anyone else experience similar issues?