I own an Element Helix 6-24x50 SFP scope. I’m wondering if it’s normal for the magnification ring to have some movement/play back and forth (in-line withe scope)? Mine does and I don’t notice this on other scopes that I own. Also, when I turn the magnification ring it sounds like sand is being grinded. I haven’t even had this scope outside yet, been sitting in my basement since unboxing.