One of my clients excitedly called me the other day after turning on his water system from its winter rest. Nearly every head in every zone had broken off, and two areas in the lawn were bubbling. Of course, the first thing thought was that the system wasn't blown out correctly, but upon arriving on the site I found that practically every 1/2" Marlex street ell had totally cracked in two. The two bubbling areas in the lawn were just two more heads on broken Marlex ells. Last year, I replaced a few of these Marlex ells at a neighbor's home - that was in the middle of the summer. He also said that a neighbor behind him also has 20 of these broken Marlex ells. All of these Marlex elbows were made in Tiawan, and installed by another landscape company. Who do you blame? Needless to say, I'm looking forward to more repairs in that housing area.