molding and strange lines in elevation

[divreig]

So I am trying to replicate the molding in the pic.  I watched a few videos. Tired the line to molding, adding belly band and experimented with the 3d poly line solid.  None worked very well. Not sure witch to use? And best way to use it. Hoping to get some pointers.   

 

Also need cant figure it out why there is lines showing up between the porch and foundation wall underneath. 

 

I tired to upload the .plan  file but looks like this form has limited the file size to 2mb, seams low, so here is link to the file. https://1drv.ms/u/s!AhpXTRlIumIKhagn3sxPujk5B46neA?e=58tB7R

 

Thanks.  

[GeneDavis]

Material regions.