Repeat last change or apply same change to many

I designed a project with lots of holes (as circles). A test run showed they were all the wrong size because I entered their diameter as the radius. I needed to change each to half its size.

I would like to be able to fix this more quickly one of two ways:

  1. Select all the holes at once and scale. This does not work because it scales the space between the objects as if I had put them into a group. Perhaps a “scale each individually” checkbox could work. Or make grouped items act differently from multiply selected separate items.

  2. Do it once, then just select the next one and use a keyboard shortcut to “Repeat the last change”, like Control-Y in Excel.

Gary