Bro, just sent to steering rack repairer kaotim, they got plenty of special tooling to open these steering rack why the hassle? Just google steering rack repairer nearby or in facebook also can search few.

Regarding the bolt you ask machinist to custom made 1 tool also more cheaper then buying new steering rack. Most nut or rack nowadays are made from aluminum or cast composition, you cant weld using normal welding rod, you need special or similar material rod to weld.

i have been searching but jst couldnt find any. im not good at using facebook but i tried googling for both repair and machinist and the results were giving me something else instead. i live in jb. and would be great if you could tell me where they usually are.