One of my sprinkler heads was shattered when mowing. This is a gear-
driven Nelson model. For replacement, I only saw two types in
HomeDepot - Orbit and Toro. The Toro model (3/4" inlet) was not
adjustable for pattern, only did 360 degrees.
The Orbit model is adjustable. Is this alright for replacement?

Also, how do I make sure all heads retract properly? I found a few
that did not retract and cut the grass/roots around the heads to make
retraction easier. Also silicone sprayed them.
Anything else I can do?

Thanks
Mark Sabatini