Hi Nancy,
You don't mention what your settings are for your graphic
frames.
You may be able to solve some problems by resetting those.
For instance, if you are using Alignment: Center, you will
get a large left margin.
Try using Alignment: Left, and in the anchored frame itself,
add just the margin you want. (Make the anchored frame roomy enough
to include your margin.)
In my project, my FM anchored frame settings are:
Anchoring Position: Below Current Line
Alignment: Left
Width: 6.5
Height: adjusted per graphic
That works well for me.
As for your figure caption problems, how about some info
about your paragraph tag settings?
Hint: use a special tag devoted solely to hang your anchored
frames from, like, maybe "anchor graphic".
Don't attach your anchored frame to your figure
titles.