I forgot to say that when I cut out the old piece I did a 15 degree
cut all around (I was trying for a 30 degree cut but I couldn't fit
the saw around the steps). Then I did a matching 15 degree cut on the
"plug". Once I got it all matched up, I used wood glue and angled some
1-1/2" finishing nails from the "plug" into the good wood to set
everything in place. I don't think with this setup that the "plug"
will be able to fall through.
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