FWIW, I chatted today with a guy who has been riding the PT SL2.4 for a year (pre-production version). He said that there were problems in two areas with the original models: (1) moisture problems in the hub and (2) weak hub transmitter. He said that both problems have been fixed in subsequent refinements (better hub seal and stronger transmitter). They apparently had a few quality problems with the original production run and they are not shipping them. He said he expects production units to be available in November. He thinks the production units will be rock solid given the way they are doing the testing.