Solution
Ok thank you . But is not normal , or it is ?
I don't think it is abnormal. There has been mechanical connection, that had significant clamping force, at that location Having some of the lacquer that coated the board stick-to or be scratched-off by the heatsink mounting hardware does not seem unusual.

Rui Neves

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Sep 20, 2014
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I don't think it is abnormal. There has been mechanical connection, that had significant clamping force, at that location Having some of the lacquer that coated the board stick-to or be scratched-off by the heatsink mounting hardware does not seem unusual.
Thanks I was worried that I had made sone mistake ...
In the end all went well .... Apart from that repasting the CPU didin't change the temperatures at all , was a risk that I already known that could have .