lubrication issue

Is oil supposed to come up through push rods to lube the rocker arm assembly? I’m not getting oil coming out through them. I cleaned quite a bit of rust out of the heads, Is it possible for them to get clogged and whats the best way to unclog them. coat hanger?
Thanks, Andy

I answered my own question

No oil through your pushrods is normal. the pushrod pivot cup is oiled through a little hole on the underside of the rocker.

Thanks Ricky