08 nitro with wheel creak!!

I have an 08 Nitro SLT with 20" rims, the chrome clad kind.
Bought thanksgiving of '07.
I have 6500 miles on it, and the left front tire has developed severe wheel creak.

Everything fits with the wheel creak issue the 07's had.
However, there is no visible pitting.

I live in South Mississippi, and there is not salt on the roads. I bought the Nitro with 6 miles on it, so it has never been anywhere near roadsalt.

My wheelweights are on the outside of my rims - ugly, but not sure if it is directly the culprit.

Will the repair method listed in the 07 service bulletin apply to my rims, or do I need to get new ones ordered?

no pics to post, as - again there is no visible pitting.

Please advise.