If you can remove that section of base, I'd recut, about 1/16" longer to let it bow in, then use one of the methods of drilling and screwing the base down where it pulls into the wall board. I'd be careful about doing something that would pull the wall board toward the base board for fear that it might crack and show through the wall paper. Jim.
Coolmeadow Setters...Exclusively Irish! When Irish Eyes are smiling....They're usually up to something!!
Home of Irish Setter Rescue of North Texas.
No, I'm not an electrician. Any information I share is purely what I would do myself. If in doubt, hire an electrician!
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At a minimum, I'm Pentatoxic...Most likely I'm a Pentaholic. There seems to be no known cure. Pentatonix, winners of The Sing Off, s3.