Hello, Beginner here, so please be gentle. I've got a new TREK Marlin 6, 2019. I was playing about with the front suspension, and don't get how they actually work?? I know there is a lock feature, which is fine. They lock, and unlock. However, If I turn the other key anti clockwise (- direction) it comes to a point where it won't turn anymore, but if I go clockwise (+ direction) the key seems to go on forever, and doesn't come to a natural stop. I also don't seem to notice any change in the suspension pressure. Should I? Is it a case of them being either on or off. Any advice on how they should work would be great. Thanks in advance.