I used some extra spacers from the monobar and longer screws and just screwed them into the part that holds the extension into the monobar. Doesn’t fit right into the bottle holes because they’re too close together and I’m sure it’s not a great idea but so far seems to work okay. I also 3d printed a spacer to shove in there and give some more support.

Can get some more detailed pics later if anyone wants something specific let me know.

I originally wanted to print something but didn't have time before my race so if anyone else has a file I'd love to have a copy.