I sprayed the drive drain with citrus degreaser and then I hosed it off. I did a bit of toothbrush scrubbing and then I wiped it down and relubed it. I don't think it's the pedals. I am pretty sure I can feel the difference. I don't really know how many miles are on my BB I bought my bike used and I have put about 5000 miles on it. I also don't think it is the BB because it is actually worse when I don't pedal. Could it be the freewheel.