You what also sucks? My last 2 days of biking luck. I took the pedal bike to work and snapped the rear derailleur off while coming back home (I had too short of a chain, and it bound up while downshifting). I counteracted my bike-building incompetence by manually stretching the short chain over the largest combination of sprockets. This combination (same that had caused the problem) was tight enough to get me home without the chain falling off. Though 4 miles in granny gear was not optimal. Today I took the electric bike to work, and picked up some extra wheel weight: Since this is less than the advertised quarter inch hole, I'm a little bummed that the tire slime did nothing to slow this leak (the tube emptied out within 3 or 4 seconds of picking up the imbalance). Another mile (only 2 minutes @ 28MPH) and I would have been home. Oh well, it's just a tire. It was half-way through its tread life anyways.