some help with corridors please

[ces]

We were happily using LDD 2004 until this summer. Now running C3d 2013. have gotten thru most of it but am venturing into corridors for the first time. I used to define a template, attach that to a vertical alignment, and create a 3d grid from that that could be made into a surface. I have created my assembly and mirrored it. I have created a corridor. I now have several questions.

1.) I am assuming from the way the assembly was created that the vertical attachment point is the centerline of the road. Our vertical alignment is the top of curb (based on the centerline horizontal alignment), and the two are not the same elevation. How can I make the vertical attachmet between the assembly and the finished grade profile be the top of curb grade? This was easily done in LDD by drawing a template then drawing a construction line from one back of curb to the other, the point where that line crossed the centerline was the defined vertical attachment point. it will be slightly higher than the crown of the road.

2.) I have a main street ("A") that is crossed by two other streets ("1" & "2"). Can I get by with one corridor for A street and break it for the intersections of 1 and 2 street or do I need several corridors for A street.

please bear with me for any and all stupid questions, I am figuring this out on my own and time is of the essence...any and all advice and experience will be greatly appreciated...

[fcernst]

Yes, not Baselines. 

"Stop baseline 1 at some station. 
Make a new baseline, same alignment, that starts at some station after where BL1 stops."

[mathewkol]

I was assuming the readers would figure that out since you can't change baseline stationing.

[fcernst]

"I was assuming the readers would figure that out since you can't change baseline stationing."

I can't make my point any clearer than this statement.