Computer Mount Bolt Help (please.)

Having issues on two separate bikes getting a computer mount for a wahoo roam. I have literally brought one of the bikes into an ace hardware and have trial/error with their bolts and have not come close to getting this right.

  1. 2020 Cervelo S5 AB08 handlebars. K-Edge mount bolts too wide (even though it says this will fit an S5 on amazon etc. I can’t be the only one with these issues. Cervelo OEM mount is OOS everywhere.

  2. Factor LS Gravel Bike - Scott Synchros RR.1 carbon bar/stem combo. I imagine the same size bolts are required as the Cervelo based on eyeballing and failing.