AF-S DX Micro-NIKKOR 40mm f/2.8G Stiff Focus Ring

So I just got my Nikon D5600 with Nikon 40mm F2.8G macro lens a few days ago.

This little lens here

The problem is, my focus ring seems quite stiff. When I first tested it out in the store, the staff told me that it’s normal, and that prime lenses have stiff focus rings, and that it will be buttery smooth in a few days. That seems like crap to me (as I can operate the manual focus ring very easily on the kit lens with just my pinky), but I bought the lens anyway.

I read the following sentence in the review provided in the link above.

As for the focus ring (which operates very smoothly), it is conveniently located on the front of the barrel, making it easy to manually focus with a thumb and index fingers while shooting images or video.

Well, that doesn’t apply to me. The focus ring on my unit is quite stiff, and I can’t operate it with just my and index fingers. The feeling is pretty much the same whether I’m on M/A or M.

Did I get myself a lemon unit ?
I really appreciate your feedbacks.