Thats it, I'm pulling it all apart tomorrow night, cleaning all the surfaces and trying some different paste.

NB temp was at 50c for 3 hrs of prime, then shot up to 70c and seems that the NB HS is not completely stable on the chipset, if i push on it a lil the temp drops, I would say its a bad mount, how about that foam tape on the board and HS, is it necessary to have on there for stabillity? I'm thinking about taking it off for a tighter seat.