I’ve completed a walnut Queen Anne style tea table.  I used multiple coats of shellac to finish.  I just noticed that the cove molding I attached to the top is separated at the corners.  I assume this is from contraction of the wood top.  How do I fix this.  Can I fill the gap?  How do you keep this from happening.  I used Norm Vandel’s book to make this project.  How did the “old timers” do this 100 years ago? 

Any help would be appreciated