Building an Rv-12 and have agreed to accept LCP's labeled"acceptable for use" for my empennage kit, I have a question about the holes. I have inspected all the holes closely and want to lower the chances of any cracks possible forming later. After deburring is there any way of smoothing out the inside of the hole before installing rivets or dimpling. In doing so I would think it would lessen chances for cracks and the smoothing should not increase the hole size.