On Mon, 1 May 2006 02:27:22 -0400, "Proctologically Violated©®"
wrote:

This can be a real persnickety problem.
What you may have to do is this:
Remove the whole handrail, to get good access to the problem hole.

I would only remove the handrail from the brackets, not the brackets
from the wall. Don't want more problems like we have now.

And I think the OP could get by by disconnecting only the problem
bracket from the handrail. And then from the wall.

Remove the old anchor, loose debris.....