Now just another point and it is a hard fact that no one considers. This wing to fuselage joint in a multi engine airplane where the engines are wing mounted actually receives less stress than a conventional single engine airplane of a similar size and weight. The greatest percentage of aircrafts total weight is already in the wing and not transferred throught this fuselage to wing joint. This I pointed out to allow you to be a bit more comfortable and it does not of course to mean you can be lax with the building practices.