the only thing i have noticed about it and was curious if anybody else has noticed this. at 24x there is very very little forgiveness in having my eye perfectly centered in the glass. i can turn it down just a little and it gets very easy to stay in the center. i have never had this issue with the other viper.
Have you checked to see if your eye piece is focused properly? I don't have that problem with my 6-24x50mm FFP MOA PST, but I have an adjustable cheek piece.