Maybe the cyclical nature of this thread should now be locked by the MOD's, in deference to the more important news items on the rest of the Forum. To sqwk7777 and 629bus I stand behind your views and hope that on any given roll of the dice, that you would be the pilots at the sharp end, using superior judgement in order to avoid having to demonstrate your superior skill. All other times our trust will be in the hands of fault tolerance, triple-redundancy and prayer.