So this is my first time posting here, so I'm not sure if this is the right place to post it, but here it goes. I recently just got myself a brand spanking new Sebenza 21, and so far, I'm pretty happy about it. But one thing I noticed about it is that when the blade is opened halfway through, the action goes from buttery smooth to kind of a rough feeling. The rough feeling is not very big, but it's big enough that it's just barely noticeable when you're opening it. The rough feeling also starts at about 50% opened and lasts until about 70%. I was wondering if this feeling would go away after playing around with it a bit more or if I should do something to get rid of the rough feeling.