Brief Description: Drilled out holes in wing spars
I had three drilled holes in my wing spars that were slightly oblonged. These three holes were one that went through the landing gear mounts. I drilled the holes out from 1/4" to 5/16". I had to install additional bolts around them to assure alignment and step the holes up 1/64" at a time. I took my time to make sure that they were done right.