CL-03 shows an endcap on the top left wall. Perhaps overriding the endcap to use Standard, will take care of the issue. Also, if you pull that cleanup radius out a little larger, to encapsulate the shrinkwraps, it should work as you expect.
CL-07 looks mostly there. Not sure why the gyp would not create a line where it terminates at the stud.
I have to admit, for a condition that is so simple, it was not easy to solve. Sometimes, you got to merge. I cheated a little by moving the baselines away from the intersection - see attached.
- Sean