And I know that you know, always did, since your first post in this thread. Your two posts were clear, the details explicit and I understood perfectly well the message you conveyed. No argument from me on that score, so if I managed to give a different impression my apologies. I could try to explain again what I meant by my comments but don't want to stuff it up even further, so I will bow out with a mea culpa and leave it at that.