High Pro 2 CPU Temperatures/Fan speed not steady

Hi folks, my IT guys have been buying lots of Duos over the past couple of years for file storage for my offices and I decided to get 2 - Pro 2's for my home, one for a HomeServer to share, and one for me :). I've tried the whs, whs2011, and built a box win8 try as a home server, but I'm going back to this route and listening to my IT guys.

Anyway,

I bought both from NewEgg and just RMA'd the first one. The fan never really kicked in above 820 rpm and the cpu sat at about 77 C. I just got my second one yesterday and I seem to be having fan/temp problems here too, or is this normal. I thought I'd ask before I start a ticket on my 2nd Pro 2.

Currently:
I'm using certified drives.
RAIDiator 4.2.22
Room Temp: 24 C
CPU Temp: 68 C
Sys Temp: 34 C
Disk 1: 45 C
Disk 2: 43 C
Fan Speed: 815

I'm sitting here watching this and what happens is that when the CPU gets to 70 C, the fan will kick in to 2393 RPM, and the temps will drop to:

CPU Temp: 50 C
Sys Temp: 28 C
Disk 1: 41 C
Disk 2: 39 C

The fan will stay on for about 3 minutes or so at that high rpm, the CPU does not drop below 50, then the fan goes back to about 800 rpm. The CPU then rises slowly up to 70 C and the process starts all over again.

I have "recalibrated" and re-booted several times.

It seems to me that the firmware is not letting the fan speed increase slowly as the temps rise.

Also, if the fan runs for several minutes while the Disks and Sys continue to drop in temperature but the CPU doesn't drop below 50 C.

Is there a temp read issue?, thermal grease issue? this seems hot. All the PC's in my house that I've built idle at 32-35 C.

Also, in talking to my IT guy today, we have about 15 Duo's all over the place, and he logged on and checked the temps on those and they are about 33-35 C.

Comments appreciated from other users before I start asking tech. I get my new RMA one tomorrow afternoon and will look and see.

Thank you,