I'm hoping to fit a BBSHD into my carbon road frame. The BB is BSA-threaded and 68mm wide, which seems perfect, but I can't find any specs on shell thickness limits. Mine is almost 11 mm thick at both openings and just over 12 mm thick at the centerpoint. Viewed from the side, thickness starts increasing about 66° toward the downtube and about 60° toward the chainstays. Can anyone confirm whether a BBSHD will fit this?