I've replaced around 100 rotor heads on one of our larger properties. Most of the replacements have been due to gear failure (no longer turning, or unable to adjust) but the some are usually leaking rotors. Sometimes at the joints, but... here is what I'm running into on the leaking rotors. notice the leaking from the screw on top. Teflon isn't fixing this. Just curious if anyone has some words of wisdom on this other than these rotors suxor. These heads are probably from initial install so they may be 5-8 years old.