So your wiggle is focused on left and right and not forward and back to see the full lens with no black ring around the lense . Unfortunately it might be the scope itself that is finicky with no room for error. Vortex is a good scope for the money , but I prefer Leupold. I had the same issue as you with a Bushnell scope and a slight issue with an older Burris scope. not bad though with the Burris . But the Bushnell was horrible in getting the full view of the scope. If your scope position fits you well , then its a matter of practice practice and more shouldering practice until its second nature . With my Leupold 1x6 firedot its instant. the second my gun hits my shoulder I have full vision through the lens . No wiggling whatsoever .