Look, the large Republic Ships didn't fix themselves, someone had to do it. Underwater Or Deep Space Welding Clones. They weren't well known, like a whisper through mouth, their contact where hard to find, their records were rarely kept on Kamino. It was usually a "my brother knows a brother" type situation. But gods, those clones, the Underwater Or Deep Space Welding Clones, they were insane. They worked through extreme conditions, underwent extreme training and only about 0.2% of clones were selected for this training out of the millions of clones created. These special clones where high grade, a bragging right, really, only one per twenty battalions or so.