COuldn't leave things alone...Decided to try the Enzotech on this mobo, since I won't have the RMA till midweek....big mistake. The TR Ultra Extreme is NOT flat. the AS5 had a Dime-sized bare metal spot of to one side. I think it needs to be lapped. SO I try to remove the backplate! Fused cushion..took about 20 minutes to remove and I don't doubt I cracked something....so I can't use that mount again. Then the Enzotech...I COULDNOT screw those things in. I tried for 45 minutes. I took the mobo almost out, tried it in..Ram out ram in. If I install it out I don't think I can get all the mobo screws in...but I couldn't screw it down. SO I'll wait and try again with the new board. SO..PlanC..stock HS in...great! My temps at idle are like 58-50-58-50...That's just great. No OC of course...gonna try remounting it but my GOD!!!!! Time to lap in the mean time...