On Friday I had the chain, and freewheel, replaced on my M700 Cannondale. Because the bike shop didn't have a 8 speed cassette, I went in yesterday (Saturday) to another shop in town to have a Shimano cassette installed. After the cassette was installed, I came home and reinstalled the wheel rear. I took the bike for a ride, and when I was coasting and pedaling backwards (as I have been known to do), the chain became very loose and was hitting the frame of the bike. Only when started pedaling forwards again did the chain tighten back up. When I had the bike on the stand, and was pedaling backwards with my hand, the chain was fine. Also, with the new cassette I can't shift onto the 8th gear without the chain rubbing (loudly) against the frame. I was going to take the bike back to the shop this afternoon, but was hoping to get some insight before I did. Thank you, in advance, for the help...I greatly appreciate it
