I bought a 5.5-22X56 NXS NightForce scope;at 5.5 to 10 magnifications the target and reticule are very clear,but if I dial to a higher level,mainly at 22,the target is blurred,at any distance. I have tried moving de eyepiece up and down,with no impruvment,I finally left it at the factory position. I am used to focus the target wiht a ring that is at the end of the eyepiece (I have a Ziess Conquest 4.5-14 X 50 and it looks clear at any magnification). Is there something I am missing ? How do you focus the target at high magnification with the NXS ? Thanks in advance for your advise.