Hi, at first this is my 6 bike, 2 bikes i have build from 0 soo i'm not a fresh in this topic + also have Nm wrench soo all below made correctly

Second i have 3 bars from kocevlo model Aero1 and those were fine.
Below photos of Kocevlo SL bars (this with center hole) and like you can see carbon fiber is broken - i use Nm wrench and tight bolts with carbon paste at 2.5Nm - 3Nm max and like you see i have broken bars. I have ride with this bars for 2 weeks and after this 2 weeks i have control bars and then we have tadam + bars are very flexible. At spirnts also i felt howb ars works. For sure I was a little scared during those 2 weeks with this bars ;/
It may look crushed but again i use Nm wrench (good one) and there was max 3Nm