Only one picture shows for me, this one:
http://3rotor.homelinux.com/images/m...s/DSCF0007.jpg
I'm wondering what that is in the lower right hand corner? Looks like a bunch of extra thermal compound? If so, the stain looks to me like it could have came from your compound seperating over time. Do you have any UV dye in your coolant? If so, does the stain glow?
peace.
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