I just received my EGW HD 20moa base and Burris XTR rings last night. I was looking at them and noticed a lot of slop in the fit between the rings and the base. It seems like there is about 1/8" - 3/16" or more play front to back. Is this normal. This my first build so I am not sure how it is supposed to fit, but it seemed like much more play than I expected. Thanks in advance for the help!