Hmmm, now I am thinking I may need to go bigger pump. I was already running my pump at 30 psi with the 1/3 gallon tips, this was giving my final spray solution of 1/2 gallon per k. I found that worked really well for weed control.
To the OP, obviously I are telling you to go with the z-spray. Gregory has upgraded his and I am in the process of switching mine and I know of another local outfit that upgraded theirs 2 years ago without any issues.
"What do you mean we canít get rid of those weeds in time? Then go over there and put some fancy signs with Latin names in front of them."