I feel I should apologise to ISIS for assuming it was the shonky bottom bracket that was creaking on the newly built 69er. I was so convinced that it was the bottom bracket that I didn’t even consider anything else.
Firstly I removed the cranks, regreased the splines and did every up super tight. It creaked.
Then I removed the cranks and bottom bracket, regreased everything and did it all up super tight. It still creaked.
Then I did the rear QR up a bit tighter. It didn’t creak.
So, apologies to ISIS, it wasn’t your fault. Well not this time anyway.