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The miche lockrings that come with those hubs are not worth the cheese they’re whittled out of. They’re also Italian threading so replacements are scarce - a Phil lockring is probably the best replacement.
I’m currently having issues with my primato hubs binding after a few rides and needing to have the axle lock nuts adjusted. This may be user error rather than poor design though!
AlexD
I rebuilt my All-City Big Block recently and haven't had a consistent ride yet. If it isn't a flat tire from each ride (very few but each ended with a flat and walk of shame), it's cog and lockring issues. I bought a Miche Pistard wheelset and a Shimano TL-SR22 tool (chainwhip & lockring tool in one). I used the Miche lockring that came with. Practiced with older wheelsets by removing lockrings, cogs. Greased the threading on the new wheel, and tightened. One ride in, I go to skid and kerplunk, cog spins freely. I go back home to tighten both the cog and lockring but neither tighten or loosen. They just spin freely on the thread. I end up ruining the top chain link of the tool. I take the wheels to my lbs a week ago. Turns out I ruined the threading so the mechanic installs and tightens the cog on the other side of the hub. I use an all-city lockring instead. I start my long ride back to my house. Halfway through, I have to stop at a red and same thing. I go back to the bike shop today and everything seemed fine until I had start pedaling again after a trackstand in traffic. The bike shop caters to triathletes and my only option for fixed gear anything is a two hour drive or train ride to NYC. I'd rather buy the needed tools over time and learn on my own, but how can I learn if there is no one to teach but youtube. I just hope I didn't ruin the wheel. It's bumming me out.