On the bottom of the cover on the 1800, is the bottom screw designed to turn the metal inside piece toward the housing, making the cover snug up to the housing? Turning the screw does not have any effect other than turning the metal piece. If so mine is not working properly as there is a space at the bottom. Some fluid comes out and hits my right side bag. I took cover off and tried reinserting but no luck. Any ideas other than get a new housing are as always appreciated.