Frustrating day... glad I stopped while I'm ahead. Decided that Dimple error yesterday is not a structural concern and will proceed with construction without adding the hole ahead and behind as is customary with dimple errors. Pictures will show that damage is very minor. Having trouble riveting HS702, HS404, HS405 with the squeezer. Befor I make an agregious error, I decided to quit before I got more frustrated. Need to research this topic tonight so that a way forward can be found for tomorow.