I've never used a crossbow but recently purchased one and a scope. The scope is a Hawke 1.5-5x32IR fast focus crossbow scope that I bought separately. It seems all the videos and articles on the internet say if you change the bow speed dial on the scope you change the magnification of the scope. But my scope not only has a speed dial for the bow speed but also has another dial on the front(eye end) that changes the magnification. It appears when I move the front end magnification dial it doesn't change the speed dial and when I change the speed dial it doesn't change the magnification on my scope. Is my scope different than the ones is those videos and articles? I'm trying to understand my scope and need help.