I cleaned and lubed my chain yesterday. What a difference. I was starting to feel friction building last week. It was also jumped from the small gear on the back to the 2nd smallest, then back again. After checking my tension and low point needle, i figured it was something else, that problem is now gone too. Mars and mercury were shining hella bright this morning, at least I think it was m&m. I should check some astronomy sites and verify it. It was -7c this morn in calgary.