I've been in touch with Carbonspeed about the handlebar bolts mentioned above - They're happy to help with a replacement set 

Hello!

Thanks for all the contributions here - They were part of the reason I decided to try the frame.  I've run into a minor issue I'm hoping to get some help with - The handlebars have either not shipped with their bolts, or I've somehow managed to lose them.  I'm working with the folks at Carbonspeed to try and resolve the problem, but I was wondering if anyone had any suggestions on aftermarket parts that I might be able to source more quickly.

My handlebars do not appear to have any threaded inserts, and seem to rely on a sleeved nut to fasten as there is no threaded hole to screw a bolt into.

I've tried some aftermarket parts by Risk - An M5 sleeved bolt/nut and found that the sleeved nut was too large in diameter to fit through the hole.  The part I tried is 'RISK RT111 Titanium M5 Stem Rear Lock Bolt Set for Road MTB Integrated Handlebars' if the explanation is unclear.

Can folks that have built this frame comment on:
- Whether or not their handlebars required a similar bolt to fasten
- Any suggestions on an alternative that I could consider using?

Thanks in advance.