Sounds like the stabilizer bar under the key needs to be lubed. Also it is mechanical, so there is a break in time. I would use it for a bit more and see if you break in the key.
After some googling it does sound like something is wrong with the stabilizer. Is it supposed to working right of out of the box or does it usually take some time for the stabilizer to set in? I'm getting my monitor exchanged for defectfrom the same shop I got my BlackWidow in on Wednesday. Should I wait it out or is it best I get it exchanged? Thanks for the reply!