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Yeah I obviously saw that but the supersix is PF30A with a 5mm asymmetry....
While the below is specifically built for cannondale PF30A, no spacers needed and has ceramic bearing for the same price...no brainer really.https://www.c-bear.com/en/products/pf30a-cannondale-super-six-evo-slice-rotor-30mm
Remind you, I am not a mechanic nor a BB/chainline specialist so I went for whatever was giving me guaranteed compatibility. C-bear did just that...while I am still waiting for THM to confirm!
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Yes, can understand your point of view entirely, and disappointing to have had no answer. I recall the following on the spec of the Clavicula (because it came across my desk):
"Mounting—fits any frame with standard 68 mm BSA shell. Available for BB30, BB30A, Pressfit30, Shimano Pressfit, Italian threading, BB386 EVO, BBright™-Pressfit"
You have to dig a bit... https://www.thm.bike/en/accessories/pressfit-30-bearings-road-35.html