Just a Suggestion before contacting Weaver
Make sure the cross hairs are centered in the scope before bore sighting and shooting.
You do this by "clicking" the adjustment all the way in one direction (for example UP). Then carefully click it all the way back down while CAREFULLY counting the number of clicks to get all the way down. Divide the number of clicks top to bottom by 2. Then carefully count that number of clicks up. That puts the horizontal bar exactly in the middle of the scope. Do the same with the windage adjustment. Now your cross hair will be centered in the scope.
I had a similar problem when I purchased a used scope. After I centered the cross hair and made my adjustments, VOILA, the scope was perfect.