U2713HM yellow tint / yellowish

Hi there..

Recently bought myself a U2713HM monitor and got a U2713HMt REV00, production date dec. 2013.

My biggest problem and concern is that it has a bit of a yellow tint on it. Even compared to my Macbook Pro screen, wich is a TN panel and also a little bit 'warmer' my Dell U2713HM looks pretty yellow.

Is this normal? Or should I send it back to the store I bought it from?

Here's my factory calibration report (clickable):

I see it's calibrated to 6000 kelvin, but that's just way to warm.. I don't know if this is normal, or has anything to do with my 'problem'. Playing with the RGB values in the OSD can fix it a bit (R on 90 and G on 89) but seen that monitors screen quality drop over time, and so the RGB values have to be adjusted about every year, I don't want to have to change the RGB values already with such significant amout.

So can anybody tell if this is something to send it back for, or if this is just normal.. Thanks!