Few weeks ago my #2 intake pushrod loosened on me. I then just re lashed it but was troubled by valve tick. I finally pulled everything off to see this. I have a new lifter and pushrod to install but will my rocker be ok? The pushrod and itself were beating on each other pretty good. Sorry for the blurry pics, my camera sucks up close. BTW, is it ok to use thread locker on the rocker nut's setscrew?

 

Another.

 

If it still ticked after it was correctly lashed, it's fornicated; and the push rod too. The one push rod is visibly altered on the end anyway, and is therefore garbage.

You should replace them, and figure out why it loosened before you consider the job done. You may discover that the problem is really a rolled cam lobe; and that the reason the lash increased is because the entire cam lobe is that much smaller than it used to be.