I think the secret sauce was how the seals are replaced, Im thinking you need to make a jig to squeeze them in with a screw jack rather than banging them in and there must be some clearance issues too.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)