I have a 08 CAAD9 6 with a Tiagra bottom bracket. How often do you have to regrease them. I have had it done twice so far. It is noisy again. I am 6'2" and 240lbs. Is it strong enough, so do I need a better quality bottom bracket? I guess I need to learn how to do it myself. The bike has 1500-2000 miles on it. It just seems like the repacking job should last longer than a couple months. It was ridden 40 miles on labor day in the rain.