Ray, I don't do any irrigation work. Know a good guy that's been in the irrig biz for over 30 yrs, so he gets my problems. Being they are cheap, probably had a cheap installer, who used homeowner grade heads, instead of good heads. The one I had like this, with numerous heads sticking up 3-4 yrs after installation, he fixed by replacing all heads.
He did have me try silicone spray first, but that was only a little help.
North central Indiana
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