Thomas,
Thanks for the feedback. I never knew about the modify wall command... I will make good use of that one!
By "fat mullions" I just meant that I wanted wide vertical dividers at the transom, but I was having trouble getting them in the proper location -- by default they just go to 3 equal spaces. I wanted it to look like 3 individual windows mulled together on site.
Curiously, I took my new door/transom combo back to the original profile to see what would happen. The results are not perfect, but it is a big improvement. This leads me to think that the reference line location has a small impact... it is the interaction with doors & windows that causes most of the problems with this profile.
Cheers,
JB
AC 21 (8002) & 22 USA
Mac OSX 10.14.5 on MacBook Pro 2.3GHz Intel i7, 16GB Ram, NVIDIA GeForce GT 750M 2GB VRAM, 500GB SSD