Rifle Scopes Aadmount mounts?

I was disappointed in the Aadland mount I purchased. It was visibly off center of the bore and when I vouced my concern to the owner he told me it's normal and shouldn't affect anything. I sent it back and replaced it with a set of Seekins rings and all was well.
 
I was disappointed in the Aadland mount I purchased. It was visibly off center of the bore and when I vouced my concern to the owner he told me it's normal and shouldn't affect anything. I sent it back and replaced it with a set of Seekins rings and all was well.
Did you actually mount a scope in it to see if it was or did you just assume based looking only?