I have one problem. I put my scope(bih nikko) on my airgun,the gun and the scope are in level,i use buble level,but reticle is not in lever. And when i lean gun to right then reticle seems to be in level.but then gun and scope are not in level. Simple i cannot get gun,scope and reticle in level at same time. What is wrong here? Is it more important that gun and scope are in level,or i should not look that i just must level my reticle. Please help.