Got mine in today and it all went well except.....the top screw hole did not line up with the threaded hole. The cover that goes on top of the filter only has 4 screws now...wondering if Danny could send me one that fits right cuz I don't want to grind on this one to make the screw fit. I did everything I could think of short of using a dremmel or rotozip to make room. Is this normal guys? Or does my cover just have a manufacturer mishap? Not complaining...just wondering.