If the proportions are incorrect then the wood can shear on either side. There is one of the disadvantages.
Carolyn Sloan has written: 'Helen Keller (Profiles)' 'First Across the Atlantic (Amazing But True)' 'The Mall' 'The Story of Alcock and Brown (Incredible Journey)' 'An Incredible Journey' 'Open for Business' 'Helen Keller (Profiles (London, England))'