Spring Cleaning

With the great weather today, I took the Specialized Roubaix road bike out for the after work ride. My route took me up to the south side of Lake Owasso and back for 21 miles. I should have done some spring cleaning on the bike though... The cassette needs to be cleaned, I busted the knob off the rear tube and the crankset was really loose. After trying to tighten the crankset, I realized I need to figure out what went wrong...