In my business I would never use the Ztr for anything much smaller than a full acre lot because it's not the right tool for the job, also I order sprinkler heads in bulk so that when this issue arises I usually replace the riser (which I carry a box full of in the back of my truck) at no cost to the consumer. I do this without asking, without your knowledge, chances are if you never pay attention to the specific riser that broke you would never even know what happened. With the exception of certain irrigation systems where the risers fail to recede, perhaps due to lack of maintenance or what have you, each instance of damage is looked into but as a rule if I break it, I replace it, no questions asked. Assuming your yard is somewhere within the standard less than 1/4 acre lot size and it doesn't involve too many obstacles or time-consuming hassles that would entail it taking me longer than most of my lots this size, my cost for a mow to you would be $30. So my suggestion to you would be to start looking for a new company, one that cares for the needs of the customer, and let your fingers do the walking because you as a consumer have certain choices to make. Have a nice day.