A couple of technical game questions

[bdtj1815]

1. In the pdt file which is side A and B? It can't be that A is the side that moves first as in some games in different scenarios different sides go first.

2. I have just run a test in my new Bulge'44 scenario and I had three bridge units trying to build a bridge, all C class, and the first bridges were not built for about 24 hours/12 turns. What would be a good setting in the pdt file.