There's 2 variables involved here:Despite the initial challenges, I'm ultimately satisfied with the bearings. They provide a more neutral and stable feeling, which aligns well with my preferences. However, I still can't comprehend why they tend to loosen significantly after installation. Do you have any insights or ideas on this matter?
1. pressing in races with washer/cup + big bolt. Definitely better than pounding them in with hammers. But due to compression, it bulges them outwards a little and prevents fully seating them all way down. I've verified this with prussian-blue and removing. So over time, the weight and pounding over bumps will seat them fully and result in needing to adjust tighter.
2. surface break-in takes time as well. If you remove and look after couple thousand miles, you'll see that surface of bearings and races are shiny rather than smooth mat-finish. This removes some material from surfaces as they wear in and results in extra clearance that needs to be adjusted out.