Section Issues in Drawings

I am having some issues with sectioning views in an assembly drawing:
First: I have designed a set of components that snap together. Every
snap location must be sectioned and dimensioned. The sectioning is
done (but slow as the twentieth section took 12 minutes to compute),
but I am having issues dimensioning. I dimensioned the first two
sections from the top view, but when I tried the third section through
the eigth from the top view I cannot grab any point/lines to dimension
from. Outside of the dimensioning tool when I place the cursor over
the section it will highlight face geometry that is not visible in the
section. This face geometry acts like it is above the section view,
but only becomes visible in outline when I try to select section
geomtry. Details: SW2005 sp0.1 with WinXP SP2. I selected 1:1 scaling
from an original of 1:2, I selected "display only surfaces", and each
section is a "partial section" I also used "exclude components" to
select only the parts that I wanted to section. I did call tech
support, but the person knowledgeable in this aspect was not in.
Second: A similar issue (and probably directly related)is that I have
ghost geometry displaying outside of the section view. Each section
view creates a bounding box that contains the section. I have elements
of the part "ghosting" (not all the geometry, but enough to get an idea
of what the part looks like) outside the bounding box from components
that I told the section to exclude. Wacky.
Third and not completely related: I have cropped some views (and a
couple section views), but I would like to redefine the crop or remove
it. Is this possible? Also, when you crop a view it shows the sketch
that is used in the crop - is there any way to hide this?
Thanks for you help.
Dan S.