do rear mech spring wear out?

scottgeniusltd2005
scottgeniusltd2005 Posts: 575
edited March 2009 in MTB workshop & tech
hi guys,

went out today, i got my bike from lbs yesterday, did about 19 miles on tar. i noticed that when i was in the bottom gears my chain was slack on top to the extreme that sometimes it would rest on the chain-stay. now i had a helpful message tennis match with nicklouse about my cassette wobbling on the newly refurbished free-hub, which nick assures me will bed back in, and i don't think that separate problem is causing todays problem. it's as if the rear derailleur is not doing it's job of keeping tension the tension in the chain. any ideas what could be causing this and how do i remedy it?

cheers
Cotic Soul rider.

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