This is the Seuri

Those photos do not show any trouble that is severe at all. Unless the photos are not an accurate representation of the trees, it looks like you have trees in fairly good health.
Spray with a good insecticide and immunox.

The bottom photo looks like Pear Tree Leaf Rust or Trellis Rust,which is also shared by Junipers.
Some people take the infected leaves off.Someone I read about used a couple sprays of Systhane Fungus Fighter,which they said helped clear it up.Monterey Fungi-Fighter looks to be similar. Brady

This is great news. Thank you both so much for responding!

The spots are definitely identical on both trees. I'll check out home depot for one of the fungicides. I think I'll wait until after the fruit gets picked to apply it... and probably again at the start of spring. Will let you know how it goes then.

That Ya-Li is weird though... when it gets fruit, it stops growing leaves and wood. I wonder about the stump it's planted over. Is there something I should put into the soil around it ?

Thanks again