I have Hunter sprinkler heads that have been working well for about 4 years. Last year I began seeing excessive water coming from around the head when the system is on and head is up. The water is coming out at the base of the turret when errect. It 's almost looks like the head is not screwed into the base housing tight enough. I have made sure that it is plenty tight. There are no cracks and the housing is not worped. Any ideas on what is wrong and how do I fix this without buying new heads? W...
