I7 920 mugen 2 scythe HOT!

So this was my first build in close to 4 years. i7 920, asus p6t, ati 5850, corsair 6gb, and such and such. I went with the mugen 2 scythe cooler, figuring it would be good enough for the overclocks I had in mind. Well, factor in the human factor, and BAM I have an issue.

I have an 3.6ghz overclock and its friggin hot. 43*c idle! 85*c prime95! yeaaah. It actually runs pretty much the same temps with a 3.8ghz overclock.

From what I have gathered in my research, these are abnormally high for this combo. So that pretty much tells me that there is one glaring issue here-me.

I am open for any ideas. I used arctic silver 5 per the instructions on their website. I may have put a bit too much (the proper recommended length of bead, just too thick of a bead). Would that cause this much of a temp issue? Perhaps could it be my overclock (183hz @ 1.275v)?

Any other suggestions or criticism (constructive or otherwise) is more than welcome. I know I am a relative noob at this. Im just looking for any help at all. Thanks in advance.

Thanks for your input. I fourtunately fixed my issue however. I took my comp apart and reseated the mugen applying a much smaller amount of paste. This helps a small bit (2-3 degrees c). However the main issue was my voltage. I had done the "research" and tried to duplicate an overclock that was done on an 920 with C0 stepping. Come to realize mine has D0 stepping, so yeah less voltage was needed. I have it deadnuts stable at 3.8ghz with 1.24v and temps dont go above 62 degrees c even after hours of prime95.

Reseat your heatsink.