It does seem that Mark Lemon is hinting there was a "mechanical issue" that hit the whole BV team. To me, this can only mean a bad batch of methanol e.g. a bit old, which means there could be absorbed water from the atmosphere. What's the current ruling about the fuel both teams use. Is it mandated that they use a common source or do they provide their own? Obviously, if everyone uses the same fuel, it is odd that only one team is badly affected.