The chatter you describe can occur with any clutch if used hard in the first 500 miles, and it sounds like this clutch has actually forced you to do that.
I also had a great experience with CM clutch and lightweight flywheel on a honda years back, and had almost pulled the trigger on a CM clutch (retaining the DMFW, though) before I decided to go with the F10 set-up.
This almost makes me wonder if they have made some incorrect assumptions about compatibility, maybe gave you a 135i setup.
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1M track toy mods: BMS chargepipe, BMS OCC, ADE FMIC, ADE motor mounts, MadDad/Lightweight Ti exhaust, ADE custom oil thermostat/cooler, custom MHD tune, F10 550i clutch, Ohlins R+T, Vorschlag camber plates, M3 'vert FSB with Turner endlinks, Stoptech Trophy BBK.
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