MarioD: Yes, that helps and gets me a little farther with my understansing.

GuitarHacker: Yes, I could probably handle it in one of my DAW's okay. I just wanted to achieve it in BIAB.

Just for update info: I have been in touch with PG Support (on the Live Chat) about the problem, and they have looked into it and see the lack of control over the volume of the lead-in as a system shortcoming. They have registered it with their design team and it should be rectified in the next update release.