Seems like my BB30 bearings don't take long to get 'muck' in them and start grinding a bit. I'd say it only takes 1000 miles or so. Is that normal? I've purchased sealed bearings but they're not really sealed. I actually took the side of and regreased one and it worked for a while longer but I'm tired of having issues. Questions - Does someone make a 'super bearing' that really is sealed and will last thousands of miles? Should I update my BB to cartridge style? Maybe that work better.

Thanks