Kind of crazy for the shop to just set it up that way without discussing with you first.

Yeah right ? Anyway, couldn't resist, tried myself, tearing every cable apart and it fits perfectly...
I don't even know what to say.

Lexon unox cockpit cracked --> Deda superbox stem with Balugoe handlebar, works like a charm now

What compression ring did you use so that the Superbox headset wouldn't cause any issues?

I just got back from the bike shop; I asked them to install the stem and a new set of handlebars, and I'm livid... He didn't use the Superbox headset and spacers but the ones that came with the frame instead. When I asked him why he left it like that, he told me the compression rings weren’t compatible. I thought I read here that it wasn’t a problem, though (using the bearings that came with the frame).

I want to check myself but don't want to bleed the brakes again...