If i were you id start over and remove your CPU re-install it make sure its seated corectly apply a thin evenly applied layer of quality thermal compound make sure your heatsink is making good contact with the CPU.Lapping well
Its a technique that removes highspots and imperfections on the bottom of the heatsink.So that your heatsink covers the entire CPU chip evenly.Creating a better heat dissipation area so that your CPU can get the maximum cooling benefit from the HeatSink.
How to Lap a Heatsink
.You need to study on this.It may or maynot be your problem .Its not hard to do but make sure that you sand the heatsink level with equal pressure .You dont want to change the integrity of the heatsink so that it sets lopsided.Pay attention to how much material your removing from the Heatsink.You may have to adjust the locking mechanism of the heatsink retainer to compensate for the material removed .Study thouroghly..
Its really all comon sense .You can use a micrometer to measure the heatsink before then again after to see how much material you removed .Shim the locking mechanism to compensate.
Im using the CoolerMaster Aero 4 version blower .
Lowerd my cpu 10 degrees
And i did have to lap the heatsink .It had a highspot in the center
of the HeatSink so it took alot of lapping.When i was done i had to install shims at a thikness of 40 thousands under the locking springs(those silver arms that actually hold the heatsink) to compensate for the material removed