Has anyone had a problem with the mid-section of the rod loose in the ferrule of the the butt section? With the mid-section inserted as far as it will go into the butt-section, the connection is not sufficiently tight to prevent the two upper sections from turning out of alignment when in use. The top-section fits snugly into the mid-section with about 10mm of free top-section still showing. Is there anything that I can spray or paint onto the fitting to make it fight tighter without jamming into the fitting permanently?