+1, If the upper loop slackens when coasting it's freehub related. Lower loop slacking is gravity vs. a light action RD cage spring, and meaningless. You don't notice it pedaling because you're not looking for it.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.