Also, from my experience with hot film type AMMs (most likely what you have), they do fail quite regularly. I am on my third one in 12 months. Of course the source of the first two was suspect (eBay vendor) and they failed within days of installation; the one I ordered from Fastlane (this site) has been perfect so far.

If my gut instinct is correct, I wouldn't rule out your AMM being bad, even if it is new-ish.

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