My plane is going in for a paint job in the near future. The way the flap hinges come together, the wing/flap hinge assembly comes close to rubbing together. Once painted, I?m worries about the inner and outer hinge parts rubbing against each other, messing up the new paint job. Would inserting washers As spacers between the hinge parts prevent any rubbing issues? The plans did not call for washers, so wondering if there is any negatives by doing this.