I have a new Nightforce 5.5x22x50. The Power Zoom ring is extreemly tight and difficult to turn. In a Nightforce Youtube demo I viewed, it showed a sales rep moving the eye piece that also moved the power zoom for the purpose of changing the power. That is impossible on my scope. If I move the eye piece, it does not move the power ring ( no matter how tight the locking ring is secured). Which is normal? Is your power zoom very tight and is it impossible to move the power ring by moving the eye piece? thanks.