But it is still better to let people know upfront, because even if you don't have a complete solution here, or don't know if it is complete, so that you don't yet inform others yet about the progress here, I might be working on the other site on an even less complete solution. When I first saw your post (on the PG forum), I was in the train commuting from work to home, and I read your post on a mobile device. I was not going to try to provide a solution to this relatively complex problem in these conditions. But if I had been sitting in front of a computer, I might have tried, not knowing that Choroba had possibly already offered here a solution that is perhaps better than what I would have tried to provide.