I am working on a part that has similar features.  This particular part has bores that have the same wall contours throughout each.  So what I did was make a block of the contour and then improted then revolved cut each one.  Worked like a charm until I needed to change the contour.  I hoped that all I would need to do is open and edit the block drawing, this would auto update the imported blocks.  It did not update.

This leads me to my question:

Is there something that I am doing wrong, or is there way to edit a block that has been inserted multiple times into a part drawing and have it auto update all?

Thanks ahead of time,

Bill T.