I have a client with their front yard split into 2 zones. One zone is functioning just fine. The other zone has a lack of pressure, causing the spray heads to not rise completely, which I had figured out to be a bust on the outer edge due to roots. So I fixed the break, but it didn't fix the problem. There are no soggy or especially green patches, so I'm not too sure that it's another break. Am I wrong in assuming that the problem is either another break in the line, or a clogged valve? This zone has less heads than the functioning zone, but I was also concerned because whoever installed the system used a bunch of funky nozzles, putting 180's where there should be 90s, etc... If I changed these nozzles out to the appropriate spray patterns, could this make that much of a pressure change? I wouldn't think so, but that might also be the plm... Thx.