This scares the bejeesus out of me, but apparently it’s easy to do.
It’s a no brainer. Just DO NOT MESS UP!
Haha. You’ll be fine with the right tools.
Do not over tighten the bolts on the bosses.
I’d lightly grease the bolts so they don’t seize over time.
If those start spinning. It won’t be fun trying to get them out.
No - but I did replace a bottle bolt holder on the down tube using rivnuts. After a bit of practice outside the bike it went OK! You just need to be confident using the tool and not too tentative I found.
If your drilling through carbon make sure you tape over the area you are going to drill.