Bearings on the lead screw loose?

Hi all. Finally made it home and am starting my C Beam Machine build. I am just getting to the Z axis lead screw install and am finding that the ID of the bearings have a fair amount of slop on the lead screw. In the build vid that Mark did it shows that they have to be sanded to get a good fit. Am I using the wrong bearings? They fit into the end plates and seem to be the only ones in the Z axis pack.

Thanks,

Paul