Thank you for everyone’s help on the BB. Got another issue, very excited to receive my ribble sportive forks and headset this morning. Just for the integrated bearings to not fit properly in the head tube, everything was the same measurements and it fits on the tube, but doesn’t need pushing in or strike me as fitting properly, it also doesn’t seem to bed the holding collar in properly. Any ideas or other headsets (1 1/8 top tapering to 1 1/2 bottom) that will work with my frame? Gutted I can’t start the build.